Acids & Salts Available — Bulk Only

Calcium Hypochlorite (Cal Hypo)

Ca(ClO)2
CAS 7778-54-3 · Formula CaCl2O2 · MW 142.98 g/mol

A high-available-chlorine solid used to disinfect water and bleach industrial substrates. It is used for water disinfection — including drinking-water and swimming-pool treatment — and as a bleaching agent for paper and textiles; it also functions as an algicide and general oxidizing/sanitizing agent.

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UN Number
UN 2880
Hazard Class
Class 5.1
HS Code
2828.10
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Biocidal Action
Solubility
21% in water at 25 °C
Functional Roles
CALCIUM HYPOCHLORITE
ANTIMICROBIAL
Applications & Use Cases
  • Water treatment: Disinfection of drinking water and swimming pools.
  • Bleaching: Bleaching agent for paper and textiles.
  • Algicide: Algae control in water systems.
  • Oxidizer/sanitizer: Industrial sanitizing and oxidation.
Physical Properties
Melting Point
100 °C
Boiling Point
Decomposes at 100 °C
Density
2.350 g/cu cm
Solubility
21% in water at 25 °C
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 5.1 placard
UN / DOT NumberUN 2880
Hazard Class / DivisionClass 5.1
Packing GroupII
Proper Shipping NameCalcium hypochlorite, hydrated or Calcium hypochlorite, hydrated mixture, with not less than 5.5% but not more than 16% water

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2828 . 10
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.28
Internationally harmonized (WCO HS)
Subheading 2828.10
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
7778-54-3
Molecular Formula
CaCl2O2
Molecular Weight
142.98 g/mol
IUPAC Name
calcium dihypochlorite
INCI Name
CALCIUM HYPOCHLORITE
PubChem CID
InChI Key
ZKQDCIXGCQPQNV-UHFFFAOYSA-N
Synonyms & Trade Names
CALCIUM HYPOCHLORITE Calcium hypochloride Hypochlorous acid, calcium salt Bleaching powder Losantin Pittchlor Pittcide Pittclor Caporit Sentry Lime chloride Chemichlon G Chemichlor G Chloride of lime Chlorine of lime Solvox KS T-Eusol B-K powder HY-Chlor
Full Description

Calcium Hypochlorite (CAS 7778-54-3) is an inorganic oxidizing chlorine compound. It is used for water disinfection — including drinking-water and swimming-pool treatment — and as a bleaching agent for paper and textiles; it also functions as an algicide and general oxidizing/sanitizing agent.

Frequently Asked Questions

What is calcium hypochlorite used for?

Calcium hypochlorite (CAS 7778-54-3) is an inorganic oxidizing chlorine compound used for water disinfection — including drinking-water and swimming-pool treatment — and as a bleaching agent for paper and textiles; it also functions as an algicide and general oxidizing/sanitizing agent.

What is another name for calcium hypochlorite?

Calcium hypochlorite is also known as bleaching powder or chlorinated lime, and is the active in many cal-hypo pool and water-treatment products (CAS 7778-54-3).

What is the difference between calcium hypochlorite and sodium hypochlorite?

Calcium hypochlorite is a solid (typically granules or tablets) with a high available-chlorine content and the calcium cation. Sodium hypochlorite is a liquid bleach solution with the sodium cation. The solid form offers higher chlorine concentration and storage stability, while the liquid is ready-diluted; both are oxidizing chlorine sources.

How is calcium hypochlorite shipped under DOT?

It is a regulated oxidizer. The ctx lists UN 2208 (BLEACHING POWDER) for the relevant grade; other cal-hypo grades may classify under different UN numbers (e.g., UN 1748/2880). Confirm the exact UN number, packing group, and packaging for your specific grade with the SDS and your carrier before shipping.

Does RawSource supply calcium hypochlorite in bulk with documentation?

Yes. RawSource distributes calcium hypochlorite to water-treatment and industrial customers and provides a Certificate of Analysis and Safety Data Sheet with shipments. Request current docs against CAS 7778-54-3 with your RFQ.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.