CAS 7681-52-9

Sodium hypochlorite

次氯酸钠

NaClOMW 74.442 g/molHS 282890 UN1791 · Class 8 · PG II

From the buying desk

Class 8 corrosive plus marine pollutant. Solution forms at 5 to 15 percent active chlorine common. Ships in HDPE drums, IBCs, or rubber-lined ISO tanks. Concentrated forms decompose with light and heat; receiver-side storage must be cool and dark.

Import Card

Before you order sodium hypochlorite 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
Bleach, Liquid bleach, Antiformin
Formula
NaClO
Molecular weight
74.442 g/mol
SMILES
[Na+].[O-]Cl
InChIKey
SUKJFIGYRHOWBL-UHFFFAOYSA-N
HS code (6-digit)
282890

Transport and hazard profile

Transport classification, UN number UN1791, IMDG Class 8, Packing Group II. Classified as a marine pollutant.

GHS hazard statements, Danger. H-codes, H290, H314, H400. Refer to the substance SDS Section 2 for the full classification.

US and Australian rules for Sodium hypochlorite

Read from the official lists by CAS 7681-52-9. Screening only: check the source before you ship, store or report.

California Prop 65

No entry

No entry for CAS 7681-52-9 in the OEHHA list dated July 31, 2026.

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OSHA exposure limit

No entry

No entry for CAS 7681-52-9 in 29 CFR 1910.1000 Tables Z-1 to Z-3.

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Australian exposure standard

No entry

No entry for CAS 7681-52-9 in the Safe Work Australia workplace exposure standards.

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CERCLA reportable quantity

Listed

Reportable quantity 100 lb (45.4 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

  • · Water disinfection
  • · Industrial cleaning
  • · Pulp bleaching
  • · Textile bleaching

Typical Chinese supplier geography

Major Chinese capacity sits in Shandong, Jiangsu. 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 Sodium hypochlorite 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

19 pages across the Sourzi moat

This term shows up in 5 regulatory pages, 14 chemical parks. Sample backlinks per content type below.

Regulatory (5)

Plus 2 more regulatory pages.

Park (14)

Plus 11 more chemical parks.

Free download

Free PDF: the MSDS verification template Sourzi runs against the supplier sheet for every CAS number we book out of China.