SDS Vault Safety Data Sheet Reference

Calcium Hypochlorite (Pool Shock)

CAS: 7778-54-3 Category: Cleaners ⚠ DANGER
Also known as: Pool shock, Calcium hypochlorite, Ca(ClO)2, Chlorinated lime

Quick Facts

CAS Number7778-54-3
Signal WordDANGER
GHS Hazard Classesoxidizing, corrosive, environmental
NFPA RatingHealth: 2 / Flammability: 0 / Reactivity: 2 / Special: OX
Common NamesPool shock, Calcium hypochlorite, Ca(ClO)2, Chlorinated lime
PubChem CID24581

Hazard Summary

⚠ DANGER: Granular oxidizing disinfectant used in swimming pools. NEVER mix with acids, ammonia, or organic materials — can cause fire, explosion, or toxic chlorine gas release. Dry product is a fire/explosion hazard.

GHS Hazard Pictograms

🔆 Oxidizer ⚗ Corrosive 🌊 Environmental

Hazard Statements (H-codes)

H271 – May cause fire or explosion; strong oxidizer
H302 – Harmful if swallowed
H314 – Causes severe skin burns and eye damage
H400 – Very toxic to aquatic life

Precautionary Statements (P-codes)

P210 – Keep away from heat and combustibles
P220 – Keep away from clothing and organic materials
P305+P351+P338 – IF IN EYES: Rinse continuously for 15 min; seek emergency care
P310 – Immediately call Poison Control

First Aid Measures (Section 4)

👁 Eye Contact
Flush immediately with large amounts of water for 15–20 minutes. Seek immediate emergency care.
🖐 Skin Contact
Flush with large amounts of water. Remove contaminated clothing. Seek medical attention for burns.
🫁 Inhalation
Move to fresh air. Chlorine gas or chloramines from misuse are life-threatening — call 911.
🫦 Ingestion
Call Poison Control (1-800-222-1222) and seek emergency care immediately.

Storage & Handling

🔒 Storage & Handling: Store in cool, dry, well-ventilated area away from all organic materials, acids, and moisture. Keep containers tightly closed.

PPE Requirements

Chemical splash goggles
Face shield
Nitrile or neoprene gloves
Apron
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