CAS 7778-54-3

Calcium hypochlorite

次氯酸钙

Ca(ClO)2MW 142.98 g/molHS 282810 UN2880 · Class 5.1 · PG II

From the buying desk

High test grades at 65% to 70% available chlorine are the usual export. Depending on water content it ships as UN2880 (hydrated) or UN1748 (dry), and several shipping lines restrict or refuse it after past vessel fires, so confirm carrier acceptance before you sign. It must be kept cool and away from organics and TCCA.

Import Card

Before you order calcium 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.

Card for the US Card for Australia

Identifiers

Synonyms
Bleaching powder (high test), Cal hypo, HTH
Formula
Ca(ClO)2
Molecular weight
142.98 g/mol
SMILES
[O-]Cl.[O-]Cl.[Ca+2]
InChIKey
ZKQDCIXGCQPQNV-UHFFFAOYSA-N
HS code (6-digit)
282810

Transport and hazard profile

Transport classification, UN number UN2880, IMDG Class 5.1, Packing Group II. Classified as a marine pollutant.

GHS hazard statements, Danger. H-codes, H272, H302, H314, H400. Refer to the substance SDS Section 2 for the full classification.

US and Australian rules for Calcium hypochlorite

Read from the official lists by CAS 7778-54-3. Screening only: check the source before you ship, store or report.

California Prop 65

No entry

No entry for CAS 7778-54-3 in the OEHHA list dated July 31, 2026.

Open the tool · Official source

OSHA exposure limit

No entry

No entry for CAS 7778-54-3 in 29 CFR 1910.1000 Tables Z-1 to Z-3.

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Australian exposure standard

No entry

No entry for CAS 7778-54-3 in the Safe Work Australia workplace exposure standards.

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CERCLA reportable quantity

Listed

Reportable quantity 10 lb (4.54 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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Common applications

  • · Swimming pool chlorination
  • · Drinking water disinfection
  • · Sanitation
  • · Textile bleaching

Sourcing documentation chain

Every shipment of Calcium 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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