Agent Name

Calcium hydroxide

CAS Number

1305-62-0

Formula

Ca-H2-O2

Major Category

Other Classes

Synonyms

Bell mine; Biocalc; Calbit; Calcium dihydroxide; Calcium hydrate; Caldic 1000; Calvit; Carboxide; Hydralime; Hydrated lime; Kalkhydrate; Kemikal; Kentoku K 100; Limbux; Lime hydrate; Lime milk; Lime water; Milk of lime; NICC 3000; Rhenofit CF; Sa 074; Slaked lime; Super Microstar; Yukijirushisakanyo; [ChemIDplus]

Category

Bases

Description

White, odorless powder; Note: Readily absorbs CO2 from the air to form calcium carbonate; [NIOSH]

Sources/Uses

Used in mortar, plaster, cement, lubricants, drilling fluids, paper pulp, and water treatment; also used to dehair hides; [ACGIH] Used in pesticides, fireproofing coatings, water-based paints, SBR rubber vulcanization, binding and paving materials, soil treatments, brewing manufacture, dental cements, petrochemicals, as chemical intermediate, buffering agent for metals, pearls, and celluloid, disinfectant, food additive, for ammonia recovery in gas manufacture, purification of sugar juices, to preserve eggs and apples during storage, in cattle feeds, and veterinary medicine; [HSDB] Used as both an inert and active ingredient (microbiocide/microbiostat) in pesticide products; [EPA REDs] Used as a nutritional supplement, pH control agent, firming agent, and processing aid for foods; [FDA]

Comments

A moderately caustic irritant; [ACGIH] Can cause skin burns and blisters; [ICSC] Corrosive to skin; [Quick CPC] Causes burns; [Alfa Aesar MSDS]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

PEL (OSHA)

15 mg/m3(total dust), 5 mg/m3(respirable fraction)

MAK

1 mg/m3

Adverse Effects
Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: