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[China Policy & Export](#policy) [Explore Products](#chem-overview) [ ](https://dosenderchem.com/) › [Products](https://dosenderchem.com/products/) › [ Raw Materials ](https://dosenderchem.com/products/) › Precursor-Controlled Chemical Regulatory Framework ## China **Precursor Chemical** Policy Understanding China\'s regulatory system is essential for lawful trade in precursor chemicals. Do Sender Chem ensures full compliance with all applicable laws and international conventions. ⚖ Policy Overview China regulates precursor chemicals under the **Regulations on the Administration of Precursor Chemicals** (State Council Decree No. 445), effective from November 1, 2005. Updated catalog revisions apply from 2021 (Ministry of Public Security, MOFCOM, and other departments). The system is administered jointly by the **Ministry of Public Security (MPS)**, the **Ministry of Commerce (MOFCOM)**, and the **General Administration of Customs (GACC)**. Precursor chemicals are classified into **three categories** based on their risk level and international control status: Category I — Strictest Category II — Strict Category III — Monitored ☰ Three-Tier Classification - **Category I:** Acetic Anhydride, Piperidine, etc. — Production license from State Council required; strictest purchase and transport control; real-name registration. - **Category II:** Butanone (MEK), Toluene, Acetone, etc. — Provincial public security license required; sales filing and end-user verification. - **Category III:** Sulfuric Acid, Hydrochloric Acid, etc. — Record-filing system; bulk purchase reporting; customs declaration for export. - **International Compliance:** UN Convention against Illicit Traffic in Narcotic Drugs and Psychotropic Substances (1988) — China is a signatory. - **End-Use Certificates:** Required for all Category I and most Category II international transactions. Export Process ## Precursor Chemical **Export Procedures** Exporting precursor chemicals from China requires coordination across licensing, customs, and international documentation. Do Sender Chem manages the entire process for our customers. 1 Verify Licenses Both supplier and buyer must hold valid precursor chemical licenses. Do Sender verifies all counterparty qualifications before quotation. ➔ 2 Apply for Export License Do Sender applies to MOFCOM for an export license, submitting product details, quantity, destination, and end-use certificate from the importer. ➔ 3 Customs Declaration With export license approved, we complete customs declaration with GACC, providing all required documentation including hazard labels and MSDS. ➔ 4 Post-Shipment Reporting Within the required timeframe, we file post-export reports with MPS and MOFCOM. Complete audit trail is maintained for every shipment. ### Required Export Documentation Checklist ✓ Export License (MOFCOM) ✓ End-Use Certificate (Importer) ✓ End-User Certificate (Importer) ✓ MSDS / SDS (GHS-Compliant) ✓ Certificate of Analysis (CoA) ✓ UN Packaging Certificate ✓ Pre-Export Notification (if required) ✓ Commercial Invoice & Packing List Product Portfolio ## Overview of **7 Precursor Chemicals** Explore our carefully managed portfolio of precursor-controlled chemicals. Click any product to view detailed specifications, uses, packaging, and regulatory information. [ 01 Class 3 · Flammable Liquid ### Butanone (MEK) CAS: 78-93-3  ·  UN: 1193 Versatile industrial solvent with excellent solvency for resins, polymers, and coatings. Widely employed in surface treatment and chemical synthesis. **Formula:** C₄H₈O **MW:** 72.11 **bp:** 79.6 °C **Uses:** Paints & coatings, adhesives, printing inks, chemical synthesis, surface degreasing **Packaging:** 190 kg steel drums, 950 kg IBC totes, ISO tank containers **Regulation:** China Category II — Provincial PSB license required; customs declaration mandatory Learn More → ](#butanone) [ 02 Class 8+3 · Corrosive/Flammable ### Acetic Anhydride CAS: 108-24-7  ·  UN: 1715 Primary acetylating agent for pharmaceutical and fine chemical synthesis. Reacts vigorously with water; handled under strict moisture exclusion. **Formula:** C₄H₆O₃ **MW:** 102.09 **bp:** 139.8 °C **Uses:** Aspirin & paracetamol synthesis, cellulose acetate production, pesticide intermediates, fragrance esters **Packaging:** 200 kg UN-certified steel drums with PTFE-lined caps, ISO tanks **Regulation:** China Category I — State Council production license; real-name purchase registration; end-use certificate required Learn More → ](#acetic-anhydride) [ 03 Class 8 · Corrosive ### Sulfuric Acid CAS: 7664-93-9  ·  UN: 1830 The world\'s most produced chemical by volume. Essential for fertilizer manufacturing, mineral processing, and petroleum refining operations. **Formula:** H₂SO₄ **MW:** 98.08 **Conc.:** 93%–98% **Uses:** Phosphate fertilizers, metal pickling, petroleum alkylation, battery acid, wastewater pH adjustment **Packaging:** 35 kg HDPE drums, 250 kg drums, 1,600 kg IBC totes, bulk ISO tanks **Regulation:** China Category III — Record-filing system; bulk purchase reporting; customs declaration for export Learn More → ](#sulfuric-acid) [ 04 Class 3 · Flammable Liquid ### Toluene CAS: 108-88-3  ·  UN: 1294 Aromatic hydrocarbon with outstanding solvent power. A cornerstone feedstock for benzene, xylene, and polyurethane intermediates. **Formula:** C₇H₈ **MW:** 92.14 **bp:** 110.6 °C **Uses:** TDI & polyurethane foams, pharmaceutical synthesis, paints & thinners, adhesives, rubber processing **Packaging:** 180 kg steel drums, 950 kg IBC totes, ISO tank containers, bulk vessels **Regulation:** China Category II — Provincial PSB license; end-user verification; export declaration required Learn More → ](#toluene) [ 05 Class 3+8 · Flammable/Corrosive ### Piperidine CAS: 110-89-4  ·  UN: 2401 Saturated six-membered nitrogen heterocycle; an indispensable building block for APIs, agrochemicals, and rubber vulcanization accelerators. **Formula:** C₅H₁₁N **MW:** 85.15 **bp:** 106 °C **Uses:** API intermediates (anesthetics, antipsychotics), agrochemical synthesis, rubber accelerators, corrosion inhibitors **Packaging:** 170 kg UN-certified steel drums, nitrogen-blanketed, PTFE-lined closures **Regulation:** China Category I — Strictest control tier; State Council license; real-name registration; mandatory end-use certificate Learn More → ](#piperidine) [ 06 Class 8 · Corrosive ### Hydrochloric Acid CAS: 7647-01-0  ·  UN: 1789 Aqueous hydrogen chloride solution; a fundamental industrial acid for metal finishing, chemical production, and water treatment. **Formula:** HCl (aq.) **MW:** 36.46 **Conc.:** 31%–37% **Uses:** Steel pickling, PVC & chlorinated organics, ion-exchange regeneration, oil well acidizing, food-grade pH control **Packaging:** 25 kg / 250 kg HDPE drums, 1,200 kg IBC totes, rubber-lined ISO tanks **Regulation:** China Category III — Record-filing required; bulk transaction reporting; customs declaration for export Learn More → ](#hydrochloric-acid) [ 07 Class 3 · Flammable Liquid ### Acetone CAS: 67-64-1  ·  UN: 1090 The simplest ketone; a universal polar aprotic solvent with rapid evaporation, excellent miscibility, and low toxicity. **Formula:** C₃H₆O **MW:** 58.08 **bp:** 56.1 °C **Uses:** Polymer & resin solvent, pharmaceutical crystallization, cosmetic nail polish remover, laboratory cleaning, acetylene cylinder filling **Packaging:** 160 kg steel drums, 950 kg IBC totes, ISO tank containers **Regulation:** China Category II — Provincial PSB license; sales filing; customs export declaration mandatory Learn More → ](#acetone) 01 ## Butanone (MEK) CAS: 78-93-3 Overview Applications Specifications Regulation Description Versatile industrial solvent for paints and coatings, adhesives, printing inks, chemical synthesis, and surface degreasing. UN 1193, Class 3 Flammable Liquid. Boiling point 79.6 C. Molecular formula C4H8O. Packaging: 190 kg steel drums, 950 kg IBC totes, ISO tank containers. Applications Paints and Coatings, Adhesives, Printing Inks, Chemical Synthesis, Surface Degreasing PropertyValue Chemical FamilyKetone Physical FormLiquid Molecular Weight72.11 Function CategoryIndustrial Solvent Market SegmentPaints, Coatings and Inks, Chemical Intermediates BrandDosender ItemDetail China CategoryCategory II Product LinePrecursor-Controlled Chemicals Chemical NameButanone (Methyl Ethyl Ketone) 02 ## Acetic Anhydride CAS: 108-24-7 Overview Applications Specifications Regulation Description Key acetylating agent for aspirin and paracetamol synthesis, cellulose acetate production, pesticide intermediates, and fragrance esters. UN 1715, Class 8+3 Corrosive/Flammable. Boiling point 139.8 C. Molecular formula C4H6O3. Packaging: 200 kg UN-certified steel drums with PTFE-lined caps, ISO tanks. China Category I controlled chemical. Applications Pharmaceutical Synthesis, Cellulose Acetate, Pesticide Intermediates, Fragrance Esters PropertyValue Chemical FamilyAnhydride Physical FormLiquid Molecular Weight102.09 Function CategoryAcetylating Agent Market SegmentPharmaceutical Industry, Chemical Intermediates BrandDosender ItemDetail China CategoryCategory I Product LinePrecursor-Controlled Chemicals Chemical NameAcetic Anhydride 03 ## Sulfuric Acid CAS: 7664-93-9 Overview Applications Specifications Regulation Description Essential industrial mineral acid for phosphate fertilizers, metal pickling, petroleum alkylation, battery acid, and wastewater pH adjustment. Concentration 93-98%. UN 1830, Class 8 Corrosive. Molecular formula H2SO4. Packaging: 35 kg HDPE drums, 250 kg drums, 1,600 kg IBC totes, bulk ISO tanks. China Category III controlled chemical. Applications Fertilizers, Metal Pickling, Petroleum Alkylation, Battery Acid, Wastewater Treatment PropertyValue Chemical FamilyMineral Acid Physical FormLiquid Molecular Weight98.08 Function CategoryIndustrial Acid Market SegmentAgriculture, Chemical Intermediates, Water Treatment BrandDosender ItemDetail China CategoryCategory III Product LinePrecursor-Controlled Chemicals Chemical NameSulfuric Acid 04 ## Toluene CAS: 108-88-3 Overview Applications Specifications Regulation Description Aromatic hydrocarbon solvent for TDI and polyurethane foams, pharmaceutical synthesis, paints and thinners, adhesives, and rubber processing. UN 1294, Class 3 Flammable Liquid. Boiling point 110.6 C. Molecular formula C7H8. Packaging: 180 kg steel drums, 950 kg IBC totes, ISO tank containers, bulk vessels. China Category II controlled chemical. Applications TDI Production, Polyurethane Foams, Pharmaceutical Synthesis, Paints and Thinners, Rubber Processing PropertyValue Chemical FamilyAromatic Hydrocarbon Physical FormLiquid Molecular Weight92.14 Function CategoryIndustrial Solvent Market SegmentPaints, Coatings and Inks, Pharmaceutical Industry, Rubber and Elastomers BrandDosender ItemDetail China CategoryCategory II Product LinePrecursor-Controlled Chemicals Chemical NameToluene 05 ## Piperidine CAS: 110-89-4 Overview Applications Specifications Regulation Description Heterocyclic amine for API intermediates (anesthetics, antipsychotics), agrochemical synthesis, rubber accelerators, and corrosion inhibitors. UN 2401, Class 3+8 Flammable/Corrosive. Boiling point 106 C. Molecular formula C5H11N. Packaging: 170 kg UN-certified steel drums, nitrogen-blanketed, PTFE-lined closures. China Category I controlled chemical — strictest control tier. Applications API Intermediates, Agrochemical Synthesis, Rubber Accelerators, Corrosion Inhibitors PropertyValue Chemical FamilyHeterocyclic Amine Physical FormLiquid Molecular Weight85.15 Function CategoryChemical Intermediate Market SegmentPharmaceutical Industry, Agriculture, Rubber and Elastomers BrandDosender ItemDetail China CategoryCategory I Product LinePrecursor-Controlled Chemicals Chemical NamePiperidine 06 ## Hydrochloric Acid CAS: 7647-01-0 Overview Applications Specifications Regulation Description Industrial mineral acid for steel pickling, PVC and chlorinated organics production, ion-exchange regeneration, oil well acidizing, and food-grade pH control. Concentration 31-37%. UN 1789, Class 8 Corrosive. Molecular formula HCl (aq.). Packaging: 25 kg/250 kg HDPE drums, 1,200 kg IBC totes, rubber-lined ISO tanks. China Category III controlled chemical. Applications Steel Pickling, PVC Production, Ion-Exchange Regeneration, Oil Well Acidizing, pH Control PropertyValue Chemical FamilyMineral Acid Physical FormLiquid Molecular Weight36.46 Function CategoryIndustrial Acid Market SegmentChemical Intermediates, Water Treatment, Building and Construction BrandDosender ItemDetail China CategoryCategory III Product LinePrecursor-Controlled Chemicals Chemical NameHydrochloric Acid (Aqueous hydrogen chloride solution) 07 ## Acetone CAS: 67-64-1 Overview Applications Specifications Regulation Description High-purity industrial solvent for polymer and resin dissolution, pharmaceutical crystallization, cosmetic nail polish remover, laboratory cleaning, and acetylene cylinder filling. UN 1090, Class 3 Flammable Liquid. Boiling point 56.1 C. Molecular formula C3H6O. Packaging: 160 kg steel drums, 950 kg IBC totes, ISO tank containers. China Category II controlled chemical. Applications Polymer and Resin Solvent, Pharmaceutical Crystallization, Cosmetics, Laboratory, Acetylene Filling PropertyValue Chemical FamilyKetone Physical FormLiquid Molecular Weight58.08 Function CategoryIndustrial Solvent Market SegmentChemical Intermediates, Pharmaceutical Industry, Personal Care BrandDosender ItemDetail China CategoryCategory II Product LinePrecursor-Controlled Chemicals Chemical NameAcetone (Propanone) Get in Touch ## Contact Our **Experts** For more information about our products and solutions, please contact our experts. We look forward to hearing from you. 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