Monoethylene glycol (MEG)
乙二醇 / 单乙二醇
Monoethylene glycol is the second feedstock for PET resin (with PTA), and one of the highest-tonnage petrochemical movers on the China-export book. MEG ships UN 1593 if classified, IMDG Class 9 in some jurisdictions, in T11 stainless ISO tanks for bulk and drums for sample shipments. Chinese capacity is split between coal-to-MEG plants in Inner Mongolia and ethylene-cracker MEG on the south-eastern coast (Huizhou, Ningbo). Coal-MEG carries trace acids and aldehydes that some downstream polyester producers specify against; the petrochemical route is the gold-standard grade for high-tenacity bottle-grade PET. This cluster aggregates CAS 107-21-1 across the regulatory matrix, the CAS page, and the MEG hub.
Glossary
Terms you will meet on this lane
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ISO Tank, ISO Tank Container
A stainless-steel or alloy-steel cylindrical pressure vessel mounted in a 20-foot ISO container frame, designed for the transport of bulk liquids and gases. Capacities typically 18-26 cubic metres (16-25 MT depending on cargo density). UN portable tank instructions cover four families: T1 to T22 for liquids and solids of Classes 1 and 3 to 9, T23 for Class 4.1 self-reactive substances and Class 5.2 organic peroxides, T50 for non-refrigerated liquefied gases, and T75 for cryogenic liquefied gases. ISO tanks carry the bulk of the world's hazardous liquid chemical trade and compete with parcel tankers at different scales.
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UN Number, UN Number
A four-digit identifier assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods to identify a hazardous substance for international transport. Required on the DG Declaration, the package marking, the placards on the container, and Section 14 of the MSDS.
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IMDG Code, International Maritime Dangerous Goods Code
The international rulebook for shipping dangerous goods by sea. Defines classification, packaging, labelling, documentation, and segregation requirements for hazardous cargo on container vessels.
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DG Declaration, Dangerous Goods Declaration
A signed shipper's document required for every dangerous-goods sea shipment, certifying that the cargo has been properly classified, packaged, marked, labelled, and is in the proper condition for transport. Issued under the IMDG Code on the IMO Multimodal Dangerous Goods Form.
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SDS, Safety Data Sheet
The 16-section document that communicates the hazards, handling, storage, and emergency response information for a chemical product. Required at destination customs for any classified hazardous chemical and at the buyer's site for worker safety. SDS is the GHS-aligned successor to the older MSDS format.
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COA, Certificate of Analysis
A document issued by the manufacturer (or by an accredited third-party lab) certifying that a specific batch of a chemical or material meets the agreed specification. Lists tested parameters, results, the test methods used, and a batch number that ties back to production.
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FOB, Free On Board
Incoterm under which the seller delivers the goods on board the vessel at the named port of shipment. Risk and cost transfer to the buyer once the cargo crosses the ship's rail. The buyer arranges and pays for sea freight, marine insurance, and all destination-side costs.
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CIF, Cost, Insurance, and Freight
Incoterm under which the seller is responsible for the cost of the goods, marine insurance, and sea freight to the named destination port. Risk transfers from seller to buyer when the goods are loaded on board at the origin port, but cost responsibility extends to destination port arrival.
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HS Code, Harmonized System Code
A six-digit international product classification code used by customs authorities worldwide to identify goods, assess duties, and apply trade controls. Countries extend the six-digit base with additional digits for tariff and statistical purposes (10-digit HTS in the US, 8-digit CN code in the EU, 10-digit AHECC in Australia).
Regulatory matrix
Cross-jurisdiction compliance
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Monoethylene glycol under REACH
European Union listing status, classifications, importer obligations.
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Monoethylene glycol under TSCA
United States of America listing status, classifications, importer obligations.
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Monoethylene glycol under IECSC
People's Republic of China listing status, classifications, importer obligations.
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Monoethylene glycol under AICIS
Australia listing status, classifications, importer obligations.
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Monoethylene glycol under K-REACH
Republic of Korea listing status, classifications, importer obligations.
Cornerstone hub
Buying chain end to end
Where it is made
Chinese industrial parks on this product line
ISO tank types
Freight-form references for the cargo
Sourzi operator note
Coal-versus-cracker MEG is the spec line that decides whether the cargo lands at a bottle-grade PET plant or gets re-routed to fibre. Insist on the production-route declaration on the COA.
Curated by Sean. Primary-source verified per the regulatory drafting rules in Sourzi CLAUDE.md.
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