Calcium Hypochlorite SDS: Complete Safety Data Sheet Guide

Calcium hypochlorite is a powerful oxidizing agent widely used for water disinfection, swimming pool treatment, and industrial sanitization. Because it reacts vigorously with organic materials, ammonia, and other chemicals, proper handling is essential to prevent fires, toxic gas release, and chemical burns. This guide summarizes the key information found in a Calcium Hypochlorite Safety Data Sheet (SDS) — formerly known as MSDS — to help handlers, warehouse managers, and safety officers understand the hazards and safe practices.

As a manufacturer of calcium hypochlorite granular and calcium hypochlorite tablets, Everglory Industrial provides this reference guide. For the official, product-specific SDS, please contact our team for the most current version.

Section 1: Chemical Identification

Section 2: Hazard Identification

Calcium hypochlorite is classified as a strong oxidizer and poses multiple hazards:

GHS Signal Word: DANGER

Hazard Statements:

• H272: May intensify fire — oxidizer
• H314: Causes severe skin burns and eye damage
• H302: Harmful if swallowed
• H335: May cause respiratory irritation
• H400: Very toxic to aquatic life

Section 3: Personal Protective Equipment (PPE)

When handling calcium hypochlorite, the following PPE is mandatory:

• Eye Protection: Chemical safety goggles or full face shield (not safety glasses alone)
• Skin Protection: Chemical-resistant gloves (nitrile or neoprene, minimum 0.3mm thickness), full-length protective clothing, and chemical-resistant apron
• Respiratory Protection: NIOSH-approved N95 or P100 respirator for dust; full-face respirator with P100 cartridge for high-exposure situations or spill response
• Foot Protection: Chemical-resistant boots (no open-toe shoes)

Section 4: Safe Handling Practices

1. Work in a well-ventilated area — outdoor handling or mechanical exhaust ventilation is required to prevent dust inhalation and chlorine gas accumulation.
2. Keep away from heat and ignition sources — calcium hypochlorite decomposes at temperatures above 175°C (347°F) and can self-ignite when contaminated.
3. Use clean, dry tools — never use scoops or containers that have been used for other chemicals, especially ammonia-based products.
4. Add chemical to water, never water to chemical — when preparing solutions, always add calcium hypochlorite to a large volume of water to prevent heat concentration and splashing.
5. Wash hands thoroughly after handling, even when gloves were worn.
6. Do not eat, drink, or smoke in areas where calcium hypochlorite is handled or stored.

Section 5: Storage Requirements

Store in a dedicated area separated from all other chemicals. Ensure the storage area has spill containment, emergency shower/eyewash station, and appropriate fire extinguishing media (water only — never use dry chemical or foam on calcium hypochlorite fires).

Section 6: First Aid Measures

Section 7: Spill and Disposal Procedures

Spill Response

1. Evacuate the area and ventilate. Wear full PPE including respiratory protection.
2. Do NOT use combustible materials (paper, cloth, sawdust) to absorb spills — this can cause fire.
3. Collect dry spill with clean, non-combustible tools (plastic or metal scoop) into a clean, dry HDPE container.
4. For small spills, dissolve in large amounts of water and neutralize slowly with sodium thiosulfate solution.
5. Wash spill area thoroughly with water after cleanup.
6. Report large spills to environmental authorities as required by local regulations.

Disposal

Dispose of calcium hypochlorite in accordance with local, regional, and national environmental regulations. Do not dispose of in regular trash. Contact a licensed hazardous waste disposal company. Product that has degraded or is contaminated must be treated as hazardous waste.