Calcium Chlorate

    • Product Name: Calcium Chlorate
    • Alias: Chloric acid, calcium salt
    • Einecs: 231-847-6
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    959963

    Chemicalname Calcium Chlorate
    Iupacname Calcium chlorate
    Chemicalformula Ca(ClO3)2
    Molarmass 206.98 g/mol
    Appearance White crystalline solid
    Solubilityinwater Very soluble
    Meltingpoint Below 100°C (decomposes)
    Density 2.71 g/cm³
    Odor Odorless
    Casnumber 10137-74-3
    Ph Typically alkaline in solution
    Oxidizingproperties Strong oxidizer
    Stability Unstable; decomposes on heating
    Boilingpoint Decomposes before boiling

    As an accredited Calcium Chlorate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White plastic drum labeled "Calcium Chlorate, 25 kg net," with hazard warnings and manufacturer details printed on the exterior surface.
    Shipping Calcium Chlorate should be shipped in tightly sealed, corrosion-resistant containers, labeled appropriately as an oxidizer. It must be kept dry and away from combustible materials, organic substances, and heat sources. Transport follows ADR, IMDG, and IATA regulations for hazardous goods. Handle with care to prevent spills, contamination, or exposure.
    Storage Calcium chlorate should be stored in a cool, dry, well-ventilated area away from heat, open flames, and incompatible materials such as organic substances, acids, and reducing agents. Use tightly sealed containers made of compatible materials to prevent moisture absorption. Protect from physical damage, avoid contact with combustibles, and ensure appropriate labeling. Safety precautions and proper segregation are essential to minimize fire and explosion risks.
    Application of Calcium Chlorate

    Applications of Calcium Chlorate in Industrial Manufacturing

    Calcium chlorate supports multiple industrial production chains as a core oxidizing agent. The following sections highlight established downstream sectors, focusing on realistic regulatory, formulation, processing, and product output considerations based on manufacturer-side experience and supply partnerships.

    1. Agricultural Herbicide Formulations

    Manufacturers supplying commercial herbicide blends often employ calcium chlorate as a contact defoliant and weed suppressant, especially for pre-harvest application in cotton and non-food row crops. It functions as a fast-acting oxidizer, disrupting plant tissue in post-emergence settings. Compliance requirements restrict its use to non-edible crop applications and ban residues in certain geographical markets. Formulators dissolve the raw material in water or combine it with surfactants to enhance foliar absorption, integrating it as a major active ingredient rather than an additive. Safe handling protocols apply due to its oxidizing strength and exothermic decomposition potential.

    Industry compliance standards

    • US EPA 40 CFR Part 180 – Tolerances and exemptions for pesticide chemical residues in food (regulation on banned residue levels)
    • European Commission Regulation (EC) No 1107/2009 – Plant protection product approval
    • REACH Annex XVII – Restrictions on the manufacture and use of certain dangerous substances
    • Global GAP guidelines – Integrated Farm Assurance (IFA) for non-edible crop inputs

    Typical usage ratio

    • Active content in herbicidal formulations: 30%–65% w/w depending on weed spectrum and crop type
    • Application concentration: 5–15 kg/ha in spray dilution; actual rate varies with target plant biomass and weather conditions
    • Lower ratios for maintenance weeding; higher proportions for full crop desiccation
    • Final concentration adjusted to comply with regional residue limits and operator safety guidance

    Downstream process integration

    • Dilution tank blending with water and wetting agents at agrochemical formulation plants
    • In-line quality control for chlorate ion content and pH
    • Drum or IBC filling for distribution to farm-scale users and commercial applicators
    • Final product distributed as concentrated liquid or wettable powder herbicide

    Final product types

    • Contact herbicide concentrates (liquid and granular)
    • Pre-harvest defoliation agents for cotton
    • Vegetation control products for industrial sites and non-crop areas
    • Spot-application weed killers for utility corridors

    2. Safety Match and Pyrotechnics Manufacturing

    The oxidizing power of calcium chlorate is crucial for pyrotechnic compositions such as safety match head mixtures and colored signal formulations. It reacts energetically with organic fuels and binders under controlled ignition, generating the required flame propagation and color intensity. Strict technical standards regulate the use of this chemical due to its reactivity and instability with phosphorus-based components. In safety match manufacturing, its ratio and particle size control produce consistent strike performance with minimized misfire rates. Pyrotechnic producers rely on batch certification to verify purity and moisture limits, integrating the raw material in pre-blending steps with antimony sulfide, coloring agents, and adhesives.

    Industry compliance standards

    • UN Model Regulations on the Transport of Dangerous Goods – Classification and labeling
    • EN 1783:1997 – European Safety Standard for match products
    • REACH Regulation (EC) No 1907/2006 – Chemical safety assessment and registration
    • ISO 9001:2015 – Quality management for chemical manufacturing used in pyrotechnics

    Typical usage ratio

    • Match head pastes: 25%–40% by weight of oxidizer, dependent on strike force requirements
    • Pyrotechnic color compositions: 5%–15% with organic fuel and colorant mix for flares or signal devices
    • Dosage reduced in safety formulations to lower sensitivity to friction
    • Batch recipe variations determined by regulatory maximums on chlorate load and user safety audits

    Downstream process integration

    • Initial dry mixing of calcium chlorate with antimony, coloring agents, and adhesives in dust-controlled environments
    • Paste formation for direct application to match sticks or cardboard via automated coating lines
    • Granular blending for pyrotechnic pellet compaction prior to flare assembly
    • Quality checks for blend homogeneity and moisture content

    Final product types

    • Safety matches (stick and book types)
    • Colored signal flares and smoke emitters
    • Pyrotechnic ignition pellets
    • Theatrical effect compositions

    3. Industrial Bleaching Agents for Pulp and Textiles

    Paper mills and textile finishing operations utilize calcium chlorate in oxidative bleaching lines for specialty paper grades and pre-treatment of cellulosic fibers. In these systems, the chemical acts as an alternative to chlorine dioxide, especially where cost, safety, or local regulatory conditions restrict gaseous oxidants. Processing lines prepare bleaching liquors by dissolving the chlorate and activating the solution with auxiliary reducing agents, achieving a high brightness without excessive degradation of fiber integrity. Close monitoring of chlorate levels prevents environmental and emissions overload. Engineers must ensure full conversion in multi-stage bleaching towers and comply with wastewater discharge requirements.

    Industry compliance standards

    • ISO 9001:2015 – Quality management for chemical intermediates in pulp processing
    • OEKO-TEX Standard 100 (Textile production – non-residual chemical compliance)
    • European IPPC Directive (2008/1/EC) – Integrated pollution prevention and control for paper mills
    • US EPA Clean Water Act effluent guidelines for pulp, paper, and paperboard industries – 40 CFR Part 430

    Typical usage ratio

    • Bleaching liquor: 0.5%–2% calcium chlorate (dry fiber basis) in batch or continuous systems
    • Adjustment by pulp K-number and brightness goal; higher doses for wood pulp, lower for recovered fiber streams
    • Total oxidant load limited by plant-specific effluent permits and fiber damage thresholds
    • Usage ratio influenced by integration with upstream chlorine dioxide generation onsite

    Downstream process integration

    • Dissolution into process water for inline preparation of bleaching solution
    • Incorporation at early-stage or intermediate bleaching towers of pulp washing lines
    • Neutralization and rinsing prior to sheet forming or yarn spinning
    • Bleached pulp or fibers transferred for paper sheet conversion or fabric finishing

    Final product types

    • High-brightness specialty papers (filter, banknote, laboratory)
    • Bleached viscose and regenerated fibers
    • White denim and technical textile yarns
    • Sanitary paper and wet-strength consumer products

    4. Explosive and Propellant Component Manufacturing

    Industrial explosives plants utilize calcium chlorate as a core oxidizer in the production of certain historic and niche explosive types where ammonium nitrate-based compositions do not deliver the required sensitivity or burn rate. Strict safety standards mandate tightly controlled storage, risk assessment, and dosage, since mixtures containing this oxidizer exhibit higher mechanical sensitivity compared to nitrate or perchlorate blends. Manufacturers typically incorporate it in pressed or cast charge compositions through pre-dried granular blending with fuels or initiating agents. Ongoing replacement by less hazardous alternatives limits volume, but it maintains a significant role in legacy products, research, and military pyrotechnics.

    Industry compliance standards

    • UN Recommendations on the Transport of Dangerous Goods – Manual of Tests and Criteria for explosives
    • ATEX Directive 2014/34/EU for explosive atmospheres in manufacturing environments
    • US BATF Explosives Law and Regulations (27 CFR Part 555) – Regulatory controls and recordkeeping
    • ISO 2620:1978 – Determination of sensitiveness to friction for explosives (explosives QC)

    Typical usage ratio

    • Pressed or cast charge mixtures: 20%–65% by weight calcium chlorate, dependent on required sensitivity and performance profile
    • Research batches may use lower endpoints for safety studies
    • Dosage limited by regulatory hazard classifications and DOT approval status for finished explosives
    • Final content frequently modified for user training devices or controlled demolition markets

    Downstream process integration

    • Dry blending with organic or metallic fuels under explosion-proof containment
    • Integrated as oxidizer stage in multi-layer charge production
    • Compacted or cast in molds as part of the explosive matrix filling
    • Product batch-testing for burn rate, friction sensitivity, and stability

    Final product types

    • Historic chlorate-based explosives for special-purpose demolition
    • Military signal devices and initiators
    • Research sample charges
    • Obsolete munitions stockpiles (subject to hazardous waste remediation)

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    Certification & Compliance
    More Introduction

    Calcium Chlorate: Solid Chemistry, Reliable Performance

    Our Journey Making Calcium Chlorate

    Calcium chlorate carries a reputation for being one of the more reliable oxidizers among inorganic salts. At our plant, production stretches back decades. We keep our process steady, grounded in simple chemistry: feedstock purity, temperature control, keen oversight of every tank and filter. We inspect both the raw calcium salts and our finished chlorate stores. Every batch gets tested not just for assay, but for factors that matter on the shop floor—moisture run-off, particle stability, chlorate content against interferences from calcium chloride.

    While many hear “chlorate” and think sodium or potassium, calcium arrives with its own personality. Through hands-on experience, we notice how it tapers moisture sensitivity and changeability in storage, and how its crystalline habit resists caking, which makes it suitable for bulk blending and automated handling. Handling calcium chlorate teaches respect: in solution, it releases active oxygen with enough energy to drive fast redox reactions, but it still carries far less fuming or blowing dust than the lighter sodium salt.

    A Closer Look at the Model and Granule

    Our top output—granular calcium chlorate, termed Model 70C—lands in a narrow mesh range, between coarse powder and small pebble, with most grains holding together after pneumatic conveyor runs or auger loads. The color runs from off-white through faint gray, depending on seasonal water. Chemically, we target 70% minimum chlorate by weight, double-checking for low calcium chloride contamination, and taking silica from process water seriously because excess fines cause flow stoppage in mixers.

    We do not push for absolutism or “ultimate” purity, since our main buyers look for oxidizer value at scale, not high-purity, specialty or laboratory grades. Fine powders only arise from secondary crushing, aimed at specialized uses where dissolving speed trumps everything else. Our staff learned through hard experience that too fine a powder brings issues if left in open air—a little moisture soon bridges the grains, and before you know it, what is supposed to pour becomes a lump.

    Calcium Chlorate in Use

    Most of our product leaves the factory bound for industrial agriculture: mainly as a herbicide active, often in pre-mixed weed-control blends. Calcium chlorate stands apart from sodium and potassium cousins by delivering rapid defoliation but less leaf-burn, so it often gets used right before harvest in sugarcane, cotton, and in non-crop vegetation management. We’ve worked with blenders who value less dust. The heavier granules mean plant operators do not need to shield their faces every time the product goes through the hopper. Another important point comes from fire risk management; granular calcium chlorate does not ignite as readily as fine sodium chlorate, which matters in large, hot sheds filled with straw, chaff, or bagasse.

    Outside agriculture, calcium chlorate finds a home in dyeing cotton and linen on a large scale, where its oxidative strength helps break down stubborn natural pigments; we have met textile plant owners who insist on calcium over sodium for smoother washing and less “yellowing” in their dyeing vats. Some mines and water treatment plants pick up calcium chlorate as a quick solution for removing cyanides or keeping bacteria in check. The oxidizing punch cuts through tough residues when alternatives like hypochlorite slow down.

    Why Choose Calcium Chlorate Instead of Sodium or Potassium?

    Among the three, sodium chlorate is famously soluble. That trait helps in some cases, but our buyers find that calcium chlorate’s lower solubility and higher density bring practical benefits to high-volume blending, spray application, and storage longevity. Sodium and potassium blends can cake up terribly in humid air—especially for those storing pallets in tropical areas or warehouses near river deltas. With calcium chlorate’s granular shape, blocks rarely form, and clumping appears less often in open barns or drafty mixing halls.

    Calcium’s molecular mass also weighs in. More material, grain by grain, means easier metering when mixing batches by volume, reducing risk of accidental over-dosing by hand or with older feeding machinery. Some operators still tip buckets rather than use fully automated augers. Our staff hear stories of those who switched from sodium to calcium and ended up with safer storage rooms—less dust, less worry about accidental spill fires, fewer complaints from maintenance staff handling broken bags.

    One clear difference lies in environmental after-effects. Sodium and potassium salts can play havoc with soil structure if the user repeats treatments over years—salt build-up, poor water penetration, dead zones where crops once thrived. Calcium ions, already a natural soil component, buffer this. Our larger agricultural clients send us feedback that long-term use of calcium chlorate leaves less visible salinity in treated fields and improves soil porosity over time.

    Safety and Handling: Real Lessons from the Plant Floor

    Manufacturing calcium chlorate has never been a business for careless hands. Our workers learn the basics from day one: gloves, goggles, dust control, clean floors, checklists. Mixing errors result in sudden heat, so process tanks get rigid controls. Unlike some oxidizers, calcium chlorate does not “creep” along cracks or corrode footing overnight, but complacency always costs in chemical handling. Experienced hands learn to recognize the warning signs: a sweet, upper-bleach smell signals accidental reduction; a sharp decline in granule density hints at moisture finding its way in.

    Plant maintenance crews track blend quality by checking for fine, chalky residues near bagging lines or elevator buckets, since this dust signals abrasion or mishandled grain. They avoid welding or grinding near open product, since scattered chlorate–especially in piles of spilled bags–raises fire risk if left unaddressed. Despite these measures, calcium chlorate feels more forgiving than sodium or potassium salts, because it does not build up static electricity as easily nor drift into airways on every draft of wind.

    Our customers benefit most from our plant’s storage knowledge. Layered sacking, regular bulk movement, and scheduled cleaning out of silos keep everything flowing. The number of field complaints on delivery—clumps, caking, unexpected reactions—drops each quarter we stick to these details.

    Managing Chlorate Purity and Byproduct Control

    Producing calcium chlorate at scale calls for selecting dependable feedstocks—lime purity matters as much as sourcing chlorine of controlled quality. In real-world conditions, process water minerals and source calcium interact, sometimes leaving small but stubborn residues that affect not only the primary use but also downstream performance in customer applications.

    Through our years in the business, we found that slow filtering at specific temperatures pulls out precipitates without hammering the granule integrity. Other producers who hurry filtration to boost output often face reports of “soft grain” or “sticky clumps” in bags half a country away. Overlooked, these differences cost more through customer complaints than they ever save on the manufacturing floor.

    Quality control teams focus on two consistent tasks: keeping perchlorate levels measured and stopping rapid decomposition. As calcium chlorate batches sit through humid seasons, some may try to force dry bags by direct sunlight or overheat warehouses. Years ago, this led to spontaneous incidents—short-lived, smoky fires, unpleasant to handle. We dedicate serious investment to climate control for storage, as well as moisture trapping liners that prevent migration within the sacks over time.

    Chemical Behavior: Real-World Effects

    Anyone who has used calcium chlorate long enough gets a unique sense for its redox strength. Direct comparison with sodium chlorate shows a slower speed in aqueous solution at room temperature, yet the oxidizing power remains fierce—not so wild as to risk out-of-control reactions with organic matter, but impactful enough to bleach, break, or decompose most fibrous biologicals.

    We hear from veteran applicators who speak of predictable weed death, less aggravating regrowth, and, when handled correctly, little visible damage to adjacent soils. Sodium chlorate’s reputation for “scorched earth” comes from its readiness to move and leach in wet ground, while calcium chlorate settles fast and restrains sideways migration, leaving treated areas easier to rehabilitate when plans change.

    The chemistry offers strengths in batch blending too. Most of our clients drop calcium chlorate directly into feed hoppers, water lines, or granulating drums. It does not raise pH so severely that downstream acidification is required, delivering a neutral-to-mildly alkaline punch. In vineyard and orchard management, this results in healthier soil chemistry post-application compared to the legacy sodium-based blends of decades past.

    Examples from the Field: Successes and Challenges

    Years around calcium chlorate teach plenty of lessons. Farm co-ops using our model 70C now plan longer application windows after learning it acts steadily over cool nights, losing less to premature runoff than competitors’ sodium-based granules. A dyeing mill on the southeast coast, switching to our product after weathering seasons of yellowed cloth from sodium chlorate, saw clearer, brighter whites and a smoother drain system. Water reclamation plants—dealing with periodic cyanide surges—rely on calcium chlorate’s chemical punch, especially after trial runs with hypochlorite failed to keep levels under control.

    On the flip side, those not respecting storage recommendations—letting bags sit in unventilated, metal-roofed sheds through humidity spikes—occasionally run into stuck bags and partial decomposition. Where customers repackage large drums into smaller bins daily, we advise keeping the routine consistent: under-rotate and cake forms quickly, over-handle and granules erode too fast. We keep technical staff available not only for selling, but for sharing advice on maximizing storage life and handling safety—because the chemical does the job, but the operator gets the last say through their habits.

    Choosing the Right Product: Small Differences, Big Impact

    Over years supplying this industry, we see the subtle but lasting differences that product form, blend, and handling create. Those who rely on sodium or potassium chlorate enjoy fast, highly soluble performance in acute applications, but trade it for higher risk of dust, faster reactivity, and aggressive soil effects. Our regular feedback—from agri-service managers, dye-house supervisors, and industrial end-users—shows that calcium chlorate’s steadiness means the day-to-day loss rate stays lower, and systems last longer.

    In places with strict regulatory climates or audits for environmental discharge, the calcium-based product fits easier into both old and new compliance patterns. Fewer spills result from lower dust and easier handling, while water treatment teams deliver cleaner outflows with less effort. Even where technological advances now enable precision dosing, the confidence gained from a product that resists caking and accidental run-off remains valuable.

    Addressing Problems: Staying Ahead of Change

    Every year brings new challenges. Regulatory changes affect application timing and allowed use. Weather grows more unpredictable, sending shocks through supply chains and triggering product shortages. Our practical learning—how granule sizing fights caking, how storage climate impacts shelf life, how chemical interactions create or solve field problems—keeps us pushing improvements.

    We dedicate resources to regular audits, both in our facility and through field feedback, to spot early warning signs. Our engineers update the process with better de-dusters and moisture absorbers. Sourcing teams hammer out agreements with suppliers to keep calcium input steady in both price and purity. Chemical blending gets monitored not just for compliance but also for end-user experience: farmers pressed for time, dyeing operators watching for consistent hues, plant managers aiming for zero lost time to stuck feed lines.

    Partnerships with logistic teams bring our product closer to point-of-use with less lead time, which also lets our experts stay in contact with customers who face real-world issues—clumping, unexpected weather change, machinery setbacks—rather than just reported numbers. This direct connection shows itself in quarterly stats but more clearly in stable customer return patterns and in fewer emergency calls for remedial shipments. We trust these real-world adjustments more than data sets alone.

    Future Outlook: Unchanging Core, Growing Adaptability

    The chemical industry stands on fast-changing ground, but some processes rely on steady, decades-tested methods. As sustainability grows in importance, calcium chlorate’s minimal impact on soil quality, compared with alternatives, puts it in a solid position for role expansion. At our plant, we focus on both safeguarding process consistency and tuning product design for the next wave of users/technology: blending compatibility, dust minimization, longer shelf life, and safer stacking for larger centralized users.

    We do not see this product as a relic, nor do we promise miracle innovation in basic chemistry. What we do offer is a ground-level understanding, shaped by years of fine-tuning, real user stories, and unfiltered field feedback. That ethos keeps us in business: not just moving boxes off the floor, but listening to which granule works better, which shipment needs more attention, and which technical question could become next year’s core improvement.

    Calcium chlorate continues to earn its seat in the roster of industrial oxidizers and field-ready weed controls by delivering what the job calls for—stability in storage, reliable reactivity, responsible residue, and a practical fit for day-to-day handling. We will keep building on experience, forgoing hype, focusing on what long-term users teach us, and making sure the next truckload meets the same test as the last.

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