Agent Name

Tetramethyl ammonium hydroxide pentahydrate

CAS Number

10424-65-4

Formula

C4-H12-N.H-O.5H2-O

Major Category

Other Classes

Synonyms

Methanaminium, N,N,N-trimethyl-, hydroxide, hydrate (1:1:5); Methanaminium, N,N,N-trimethyl-, hydroxide, pentahydrate; [ChemIDplus] Tetramethylammonium hydroxide pentahydrate; [Sigma-Aldrich MSDS] UN3423

Category

Bases

Description

Colorless deliquescent solid; [Merck Index] White hygroscopic crystals; [Sigma-Aldrich MSDS]

Comments

A very strong base that readily absorbs carbon dioxide from the air; [Merck Index] Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; May be fatal by ingestion; Toxic by skin absorption; Oral LD50 (rat) = 34-50 mg/kg; [Sigma-Aldrich MSDS] See "Tetramethyl ammonium hydroxide."

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Tetramethylammonium hydroxide, solid."

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.