Agent Name

Acetaldehyde oxime

CAS Number

107-29-9

Formula

C2-H5-N-O

Major Category

Nitrogen Compounds

Synonyms

Acetaldoxime; Aldoxime; Ethanal oxime; Ethylidenehydroxylamine; Hydroiminoethane; [ChemIDplus] UN2332

Category

Oximes

Description

Two crystalline modifications, alpha and beta; [Merck Index] Colorless liquid with a pungent odor; Two crystalline modifications with mp = 12 and 46.5 deg C; [CAMEO] Liquid; [IUCLID]

Sources/Uses

Used as an intermediate in chemical synthesis; [HSDB]

Comments

Emergency treatment: Irritants; [HSDB] May form explosive peroxides with air; [CAMEO] Not irritating or sensitizing to guinea pig skin; Expected to induce methemoglobinemia based on studies of related oximes; Likely inhibits acetaldehyde dehydrogenase in the liver; No evidence of mutagenicity; [IUCLID] May form explosive mixtures with air; An irritant; [Alfa Aesar MSDS]

Exposure Assessment
Vapor Pressure

7.71 mm Hg

Odor Threshold Low

1 ppm

Lethal Concentration

LC50 (rat) = 8,800 mg/m3/4hr

Explanatory Notes

Flash point < 22 deg C; [HSDB] Odor threshold from IUCLID;

Adverse Effects
Methemoglobinemia

Methemoglobinemia, Secondary

Links to Other NLM Databases
Health Studies

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