Agent Name

2-Methyl-5-nitrobenzenesulfonic acid

CAS Number

121-03-9

Formula

C7-H7-N-O5-S

Major Category

Nitrogen Compounds

Synonyms

2-Toluenesulfonic acid, 5-nitro; 4-Nitro-2-toluenesulfonic acid; 5-Nitro-2-methylbenzenesulfonic acid; 5-Nitro-o-toluenesulfonic acid; Benzenesulfonic acid, 2-methyl-5-nitro-; Kyselina 4-nitrotoluen-2-sulfonova [Czech]; Pntos; o-Toluenesulfonic acid, 5-nitro-; p-Nitrotoluene-o-sulfonic acid; 4-Nitrotoluene-2-sulphonic acid; [ChemIDplus] UN2585

Category

Nitrobenzesulfonic Acids

Description

Solid; [HSDB] Pale brown odorless crystalline powder; [MSDSonline]

Sources/Uses

Used in the chemical industry as a coloring agent and intermediate; [IUCLID]

Comments

A moderate skin irritant; A strong eye irritant, according to animal studies; Handled by workers as a "wetcake" so no dust is generated; Wetcake is corrosive to skin since it contains sulfuric acid; [IUCLID] May cause irritation; [MSDSonline]

Exposure Assessment
Explanatory Notes

Flash point > 133 deg C; [IUCLID] The Guide in the Emergency Response Guidebook is for "Aryl sulfonic acids, solid, with not more than 5% free Sulfuric acid."

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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Related Information in HazMap
Other Information

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