Epichlorohydrin Total Landed Cost Calculator: From FOB to Your Plant

Epichlorohydrin, commonly identified as ECH, is assigned CAS 106-89-8 and is a chlorinated liquid epoxide with molecular mass 92.52 g/mol, boiling point 115°C at 101.3 kPa, and density near 1.181 g/cm³ at 20°C. The total landed cost model for ECH converts a commodity quote at the named port of shipment into an inventory value at the receiving plant flange or drum unload station. The calculation is based on net weight received, not bill-of-lading weight. Because ECH is traded as a hazardous liquid requiring specialized tank, analytical, and customs handling, the difference between FOB and delivered cost is not incidental; it includes ocean freight, marine insurance, destination terminal charges, import duty, inland drayage, demurrage, storage, sampling, certification, and loss allowance.

In epoxy resin, synthetic glycerin, and water treatment resin supply chains, ECH is frequently quoted FOB at a load port in Northeast Asia, the U.S. Gulf Coast, or Western Europe. The FOB quote covers production, inland positioning to the port, export clearance, and loading aboard the vessel. It does not cover the post-loading cost stack. A reliable landed cost calculation therefore treats FOB as the first data input rather than the purchase price at the plant. Without that discipline, a low FOB quote can appear economically favorable while carrying higher freight, detention, or quality-risk cost at destination.

What Cost Elements Separate FOB from Actual In-Plant Inventory Value?

Under Incoterms 2020, FOB is intended for non-containerized seaborne goods. The seller performs export clearance and delivers the goods on board the buyer-nominated vessel at the named port of shipment. The buyer assumes risk and cost from that point forward. In containerized ECH movements, the practical transfer point is often the terminal rather than the vessel rail. This mismatch means the cost calculator must record the actual delivery point, the terminal gate, the container yard, and the onboard loading operation rather than assuming the three-letter Incoterm alone defines all cost allocation.

The generic landed cost equation is: total landed cost per metric ton = (FOB invoice value + ocean freight + marine insurance + destination terminal handling + customs duty + inland freight + demurrage or detention + storage and working capital + quality verification + loss allowance) ÷ net metric tons received. The denominator should be net outturn weight. For ECH, outturn weight is measured by weighbridge, tank load cells, or certified shore tank gauging, not by nominal volume alone. At 20°C, a volume discrepancy of 500 L is equivalent to approximately 590 kg of ECH. If the buyer settles on bill-of-lading weight and does not reconcile the receiving weight, that loss is not visible in the standard cost.

Marine insurance is commonly arranged at 110% of CIF value under Institute Cargo Clauses (A) or equivalent national marine cover. Import duty is assessed on customs value, which generally includes ocean freight and insurance to the port of entry. Terminal handling, wharfage, security, documentation, and container or tank-handling surcharges are destination charges that may arrive as separate invoices from the vessel agent, terminal, and freight forwarder. The calculator should not bury them in a single freight line because they respond to different cost drivers and often have separate payment terms and tax treatment.

Payment terms and currency exposure also enter the inventory value. A US-dollar FOB quote may be paid under letter of credit or open account, with bank charges, confirmation fees, and interest carry between shipment and retirement. If the receiving plant operates in a different base currency, the landed cost calculation includes the exchange rate at the date of purchase order, payment, and customs declaration, not only the proforma invoice rate.

Bulk ISO Tank and Drummed ECH Inbound Freight Profiles

For regional and intercontinental ECH volumes below parcel tanker scale, the product moves in stainless steel T11 ISO tanks with a nominal capacity near 24,000 L. At a density of 1.181 kg/L, the resulting net payload is approximately 28.3 t, subject to the portable tank instruction, maximum allowable working pressure, and road or rail mass limits. A receiving dock for ISO tanks requires a closed-loop vapor return, nitrogen padding, bonding and grounding, and a sealless or magnetic-drive pump to avoid mechanical seal leakage from a toxic and flammable liquid. Drummed ECH typically uses 200 L or 225 L steel drums. The smaller parcel size raises unit freight, handling labor, and cumulative heel retention. Drum unloading should be performed under local exhaust or inert blanketing because ECH has a closed-cup flash point near 31°C.

A cost calculator should not average bulk and drummed freight into one unit rate. ISO tank freight is usually quoted per tank or per ton, with free-time and per-diem retention after a specified number of days. Drum freight is quoted per drum or per ton with conventional less-than-truckload or full-truckload authority. The two modes have different demurrage, cleaning, disposal, and sample-retention economics. A plant receiving both modes should assign them to separate landed cost records; otherwise drum package inefficiency is hidden by bulk tank efficiency.

Previous cargo chemistry is a significant ECH supply risk. A prior cargo of amines, epoxide hardeners, unsaturated esters, or hydrolyzable solvents can contaminate ECH and initiate oligomerization. The tank operator should provide a last cargo certificate and a wall-wash analysis before loading. If the prior cargo is incompatible, the tank must be washed, dried, and purged to the supplier’s dew point specification. In multi-cargo tank fleets, residual product in the bottom valve, vapor line, or manway gasket can reduce ECH purity at the parts-per-thousand level. Published data for this specific configuration is limited to operator and plant logs. The landed cost model should therefore include the plant’s historical quarantine or rejection rate for each tank operator as a separate cost-probability line.

When Demurrage and Terminal Retention Charges Overtake a Nominal FOB Discount

A nominal FOB discount can be eliminated by demurrage, customs hold, carrier detention, tank retention, and terminal storage. In parcel tanker movements, laytime is fixed in the charter party. Once the allowed laytime expires, demurrage accrues in a settled daily or part-day rate. Terminal berth delay, tide windows, shore tank availability, and pre-loading tank inspection all consume laytime. In ISO tank moves, the tank operating contract often grants a free-time period at destination between 7 and 14 days. After free time, per-diem retention applies and continues until the empty tank is returned to the designated depot. A delayed customs entry or missing Certificate of Analysis can trigger retention charges larger than the freight difference between two FOB quotes.

The transport classification for ECH is UN 2023, Class 6.1, Packing Group II, with subsidiary flammability risk. Destination terminals may apply dangerous goods surcharges for IMO Class 6.1 acceptance, security escort, and restricted-stack storage. These charges are not always included in an ocean freight quote. The calculator should require terminal tariff inputs for dangerous goods acceptance, storage, and container or tank moves, and it should separate demurrage as a distinct field because demurrage invoices often arrive weeks after delivery.

If the buyer uses a purchase order with a free-time allowance but no penalty recovery clause for documentation delay, the plant absorbs demurrage. The calculator should therefore carry a documentation-hold cost line. Data for documentation hold frequency is plant-specific and is usually derived from the release-to-production timestamp, customs entry timestamp, and tank operator invoice history.

Customs value is not necessarily equal to the FOB invoice amount. Under the WTO Customs Valuation Agreement, the transaction value may include assists, royalties, and certain subsequent proceeds. If the buyer supplies the vessel, the arm’s-length ocean freight benchmark may be required to support customs value. Related-party pricing must satisfy the arm’s-length standard under applicable transfer pricing rules. The harmonized tariff classification for ECH is subheading 2910 30 00 in the EU and a corresponding national schedule elsewhere. Trade remedies, preferential duty programs, and country-of-origin rules can shift the tariff deposit between 0% and the most-favored-nation rate. The calculator should accept origin, preference certificate type, and the actual duty deposit rate rather than assuming a single global duty.

Handling Water Uptake, Iron Contamination, and Certification Drift

ECH is reactive with water and can hydrolyze to 1-chloro-2,3-propanediol under acidic or basic conditions. Water uptake during transit, storage, or sampling raises the water content and reduces downstream epoxide functionality in resin applications. Receiving limits for water are commonly specified at 50 mg/kg or lower for high-purity resin grades. Color is similarly sensitive because iron pickup from carbon steel lines, pumps, or tank contamination can shift APHA color. Stainless steel 316L wetted surfaces, closed sampling loops, and nitrogen blanketing are used to keep water and oxygen ingress below the threshold that triggers polymerization or corrosion. The landed cost model includes analytical cost per receipt: gas chromatography for assay, Karl Fischer titration for water, APHA color, and density. Each quarantined lot awaiting analysis incurs inventory carrying cost and may displace working capital for an additional 2 to 5 days.

Contractual limits vary by producer and downstream resin system. The calculator should flag lots with water or color near the upper boundary because downstream epoxy resin stoichiometry, catalyst consumption, and resin color body are influenced by trace hydrolysis species and metallic contaminants. If a COA is missing or a lot is placed on hold, the calculator should add the analytical expediting cost and the demurrage or tank retention exposure for the hold period.

Transport Classification and Regulatory Data Inputs

The landed cost model requires up-to-date transport and regulatory classifications because they determine freight eligibility, terminal acceptance, and dangerous goods surcharge. The following data inputs should be retained as a receiving compliance record for each shipment.

These data inputs feed the customs, dangerous goods, and storage-cost modules. The exact tariff deposit and dangerous goods surcharge must be updated from the destination country tariff schedule and the terminal tariff because both change more frequently than FOB quotes. The calculator should not hard-code a tariff or surcharge value; it should reference the current published tariff and terminal tariff sheet as linked data fields.

Storage, Working Capital, and Loss Allowances Enter the Landed Cost Calculation

Storage cost for ECH is not zero once the tank arrives. The plant must provide a lined or stainless steel storage tank with nitrogen blanketing, pressure and vacuum relief, and a closed vent routed to a scrubber or flare. The working-capital line is the product of the delivered value, the average inventory holding period, and the buyer’s cost of capital. For a hazardous liquid with a closed-cup flash point near 31°C, storage may be restricted by fire code to a detached flammable storage area, increasing interdepartmental transfer cost. The calculator should charge the receipt lot with rent, nitrogen, electricity, allocated area fire protection, and tank cleaning or inspection cost for the holding period between arrival and use.

Loss allowance is assessed from line drainage, pump stubs, sample containers, and heel left in the tank after unloading. A closed-loop unload with dedicated pump and hose can reduce loss but does not eliminate it. Drummed ECH often leaves more heel per unit weight than bulk ISO tank receipts. The plant should track mass balance separately for railcar, drum, and ISO tank receipts; mixing modes hides the fact that drum heel losses may be two to three times higher than bulk tank heels. Published data for this specific configuration is limited to plant operational logs and tank inspection reports, but the calculator should use historical mass-balance reconciliation to set the loss factor.

Analytical sampling consumes ECH and can create waste that requires licensed disposal. The cost of retaining retain samples under supply agreements should be assigned to the quality verification line rather than buried in overhead. Pre-unload verification includes seal numbers, tank pressure, visual condition, and product temperature. If the tank was not padded, thermal breathing may have drawn humid air through the relief valve, elevating water content. The unload pump should be bonded and grounded, and the area should be classified per IEC 60079-10-1 or NFPA 497. If a COA is missing, the lot is quarantined until the laboratory finishes the receiving matrix. That delay is not a supplier penalty in most contracts unless the purchase agreement contains a specific COA penalty clause, so the plant’s standard cost should include the historical probability of documentation holds.