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Water Treatment

Calcium Hypochlorite

Ca(OCl)2

Solid chlorine source for disinfection of drinking water, swimming pools, wastewater and surfaces.

Chemical name
Calcium hypochlorite
CAS number
7778-54-3
Also known as
Cal hypo, Chlorine granules
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Product overview

Calcium hypochlorite is a solid oxidizing agent that releases available chlorine when dissolved in water. Its solid form makes it convenient to store, transport and dose compared with liquid chlorine products.

It is widely used for disinfecting drinking water supplies, swimming pools and wastewater, and for sanitation and bleaching duties in industrial and commercial settings. As a strong oxidizer it must be stored and handled in line with its Safety Data Sheet.

Applications

Typical uses for this chemical. Suitability for a specific process, and grade requirements for food, pharmaceutical or potable-water use, should be confirmed with our team.

Technical information

Technical information for Calcium Hypochlorite
Chemical nameCalcium hypochlorite
FormulaCa(OCl)2
CAS number7778-54-3
Molecular weight142.98 g/mol
HS code2828.10
Transport classificationUN2880 (hydrated, 5.5–16% water) or UN1748 (dry), Class 5.1, PG II
AppearanceWhite to light grey (or pale yellow) granules, powder or tablets with a strong chlorine odour
FormsGranules (approx. 14–50 mesh / 0.2–1.2 mm) · Tablets (e.g. 20 g, 100 g, 200 g) · Powder / granule-powder mix
Grades70% min available chlorine – sodium process · 65% min available chlorine – sodium process (water treatment) · 65% min available chlorine – calcium process (low moisture) · Drinking-water grade (AWWA B300 / EN 900, NSF 60 certified)
Packaging45 kg plastic drums (most common export pack) · 40 kg round drums; 45–50 kg octagonal / 50 kg square plastic drums lined with PVC bag · Smaller pails/drums 1–25 kg for pool trade · Sea freight in drums only (no bags, IBCs or bulk under the IMDG Code)

Identifiers and classifications are standard reference data for the substance. Forms, grades and packaging reflect what is commonly traded internationally; availability for your order is confirmed in the quotation.

Typical specifications

Typical values for commonly traded grades of Calcium Hypochlorite, based on international standards and published manufacturer data.

Granular 70% – sodium process (typical export)

Calcium Hypochlorite: Granular 70% – sodium process (typical export)
ParameterTypical value
Available chlorine≥ 70%
Moisture (H2O)5.5–10%
Water insolubles≤ 3.0%
Sodium chloride (NaCl)12–16%
Calcium chloride (CaCl2)≤ 2%
Calcium hydroxide (Ca(OH)2)≤ 2%
Calcium carbonate (CaCO3)≤ 3%
Particle size (14–50 mesh)≥ 90%
Bulk density1.0–1.1 g/mL
Annual available-chlorine loss≤ 10%

Granular 65% – water treatment grade (AWWA B300 / EN 900 type)

Calcium Hypochlorite: Granular 65% – water treatment grade (AWWA B300 / EN 900 type)
ParameterTypical value
Available chlorine (at manufacture)≥ 65% (typical average 68%)
Water5.5–8.5%
Insolubles (in distilled water)≤ 3%
Iron (as Fe)≤ 0.05%
pH (1% solution)10.4–10.8
Particle size210–1,190 µm (> 95%)
Solubility in water (20 °C)180–220 g/L

65% – calcium process (low moisture, UN1748 type)

Calcium Hypochlorite: 65% – calcium process (low moisture, UN1748 type)
ParameterTypical value
Available chlorine≥ 65%
Moisture (H2O)≤ 3%
Water insolubles≤ 5.0%
Calcium chloride (CaCl2)≤ 9%
Particle size (14–50 mesh)≥ 87%
Bulk density1.0–1.1 g/mL
Annual available-chlorine loss≤ 8%
Reference standards:AWWA B300 (Hypochlorites)EN 900 (Calcium hypochlorite for drinking water)GB/T 10666-2019 (China, calcium hypochlorite)NSF/ANSI/CAN 60IMDG Code / ADR (UN1748, UN2880, UN3485, UN3487)

Strong oxidiser. Sodium-process (≥70%) and calcium-process (≥65%) grades differ in moisture and transport classification.

Typical values are for guidance. The specification for your order depends on grade and origin and is confirmed in the quotation, Technical Data Sheet and Certificate of Analysis.

Packaging

  • 45 kg plastic drums (most common export pack)
  • 40 kg round drums; 45–50 kg octagonal / 50 kg square plastic drums lined with PVC bag
  • Smaller pails/drums 1–25 kg for pool trade
  • Sea freight in drums only (no bags, IBCs or bulk under the IMDG Code)

Packaging commonly used for export shipments of this product. Availability depends on grade and origin and is confirmed per order.

Packaging confirmed per order

Tell us your preferred packaging and handling requirements — we'll confirm available options for your grade, volume and destination.

Ask about packaging

Industries

Documentation

Request the documents you need to evaluate Calcium Hypochlorite. We send documents that match the grade being quoted.

  • TDS

    Technical Data Sheets

    Product specifications and technical information.

  • SDS

    Safety Data Sheets

    Safety and handling documentation where available.

  • COA

    Certificate of Analysis

    Batch-specific documentation where applicable.

Request a Quote

Get a quotation for Calcium Hypochlorite

Share your quantity and destination — our export team will confirm grade, packaging and pricing.

Include country code, e.g. +66

Frequently asked questions

What grades of Calcium Hypochlorite can LALITAPATTRA supply?

Calcium Hypochlorite is commonly traded as 70% min available chlorine – sodium process, 65% min available chlorine – sodium process (water treatment), 65% min available chlorine – calcium process (low moisture), Drinking-water grade (AWWA B300 / EN 900, NSF 60 certified). Availability varies by origin and destination market — share the grade, purity or standard you require and our team will confirm what we can supply, with the current specification.

Can I get the TDS, SDS or COA for Calcium Hypochlorite?

Yes. Documentation for Calcium Hypochlorite can be requested through this page. We send the documents that apply to the specific grade you are evaluating; a Certificate of Analysis is batch-specific and issued where applicable.

What packaging options are available for Calcium Hypochlorite?

Common export packaging for Calcium Hypochlorite includes 45 kg plastic drums (most common export pack); 40 kg round drums; 45–50 kg octagonal / 50 kg square plastic drums lined with PVC bag; Smaller pails/drums 1–25 kg for pool trade; Sea freight in drums only (no bags, IBCs or bulk under the IMDG Code). Tell us your preferred packaging when you request a quotation and we will confirm what is available for your grade and volume.

Can Calcium Hypochlorite be supplied for export?

We support export inquiries for Calcium Hypochlorite. Include your destination country and port in your request so we can prepare a quotation that covers documentation and logistics coordination.

What should I include in a quotation request?

The product name and grade, quantity and unit, preferred packaging, destination country and port, required delivery date and any documents you need. The more detail you share, the more precise the quotation.

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