CAS 78-93-3

Methyl ethyl ketone

甲乙酮

C4H8OMW 72.107 g/molHS 291412 UN1193 · Class 3 · PG II

From the buying desk

Class 3 flammable, flash point -7C. Ships in HDPE drums, IBCs, or stainless ISO tanks. Major Chinese capacity at Maoming Petrochemical, Lihuayi. Coatings industry is the largest single sink globally.

Import Card

Before you order methyl ethyl ketone from China, see its register listing, the duty, anti dumping cases and a supplier check on one card, each with its source and date.

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Identifiers

Synonyms
MEK, Butan-2-one, 2-Butanone, Ethyl methyl ketone
Formula
C4H8O
Molecular weight
72.107 g/mol
SMILES
CCC(=O)C
InChIKey
ZWRUINPWMLAQRD-UHFFFAOYSA-N
HS code (6-digit)
291412

Transport and hazard profile

Transport classification, UN number UN1193, IMDG Class 3, Packing Group II.

GHS hazard statements, Danger. H-codes, H225, H319, H336. Refer to the substance SDS Section 2 for the full classification.

US and Australian rules for Methyl ethyl ketone

Read from the official lists by CAS 78-93-3. Screening only: check the source before you ship, store or report.

California Prop 65

No entry

No entry for CAS 78-93-3 in the OEHHA list dated July 31, 2026.

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OSHA exposure limit

Listed

Table Z-1: 200 ppm, 590 mg/m³ as an 8 hour average.

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Australian exposure standard

Listed

150 ppm, 445 mg/m³ as an 8 hour average, 300 ppm, 890 mg/m³ short term.

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CERCLA reportable quantity

Listed

Reportable quantity 5,000 lb (2,270 kg). A package holding this much needs RQ on the shipping paper.

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EPCRA Tier II threshold

No entry

Not on the Extremely Hazardous Substances list, so the general 10,000 lb Tier II threshold applies where an SDS is required.

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Regulatory profile across 5 jurisdictions

Verified against ECHA, US EPA TSCA Inventory, MEE China IECSC, NIER K-REACH, and AICIS AIIC. Last verification 2026-04-30. Confirm with the regulator portal before any shipping decision.

EU REACH
Listed
US TSCA
Listed
China IECSC
Listed
Korea K-REACH
Listed
Australia AICIS
Listed

Look up other substances at the REACH / TSCA cross-jurisdiction checker.

Common applications

  • · Solvent (paints, coatings, adhesives)
  • · Vinyl coatings
  • · Magnetic tape coating
  • · Pharmaceutical extraction

Typical Chinese supplier geography

Major Chinese capacity sits in Guangdong, Shandong. Coastal producers (Shandong, Jiangsu, Zhejiang) typically dominate export volume because of port access; inland producers (Inner Mongolia, Xinjiang, Shaanxi) compete on raw-material cost but add inland-rail or trucking cost to reach the coast.

Sourcing documentation chain

Every shipment of Methyl ethyl ketone from China should include a per-batch COA, a current SDS per GB/T 17519 on the China side and the destination jurisdiction's standard on the import side, a packing list, a bill of lading, and a certificate of origin plus an MSA China DG packing certificate. For Incoterms reference see FOB, CIF, and CFR.

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Read next

Where this substance shows up across Sourzi

Referenced in

15 pages across the Sourzi moat

This term shows up in 5 regulatory pages, 1 topic clusters, 9 chemical parks. Sample backlinks per content type below.

Regulatory (5)

Plus 2 more regulatory pages.

Topic cluster (1)

Park (9)

Plus 6 more chemical parks.

Free download

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