Agent Name

Sodium metaborate

CAS Number

7775-19-1

Formula

B-H-O2.Na

Major Category

Metals

Synonyms

Boric acid (HBO2), sodium salt; Borosoap; Kodalk; Sodium borate; Sodium borate (NaBO2); Boric acid, monosodium salt; Sodium metaborate, anhydrous; [ChemIDplus]

Category

Metalloid Compounds (Boron)

Description

White solid; [Merck Index] Hydrate: Cream colored powder; [MSDSonline] Commercially available as octahydrate and tetrahydrate; [HSDB]

Sources/Uses

Used in cleansers, detergents, adhesives, and photographic solutions; Also used as a fire retardant in sodium chlorate, a defoliant; a textile finishing agent, and a sequestrant; Tetrahydrate: Used as an insecticide, fungicide, nematocide, and herbicide (non-crop land, cotton production, and under asphalt); Workers in mining and processing are exposed; [HSDB]

Comments

A skin irritant; Toxic by ingestion; Oral LD50 (rat) = 2330 mg/kg; [HSDB] Also found commercially as octa- and tetrahydrate; [Hawley] No published studies on reproductive effects; See boric acid; [REPROTOX] A strong oxidizing agent; An irritant; [MSDSonline] See "Boric acid."

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Nephrotoxin

Yes

Reproductive Toxin

Yes

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: