Agent Name

Nitrosylsulfuric acid

CAS Number

7782-78-7

Formula

H-N-O5-S

Major Category

Toxic Gases & Vapors

Synonyms

Nitrosylsulphuric acid; Sulfuric acid, anhydride with nitrous acid (1:1); Sulfuric acid, monoanhydride with nitrous acid; [ChemIDplus] Nitrosyl sulfate; Chamber crystals; Nitrososulfuric acid; Nitroxylsulfuric acid; Nitrosulfonic acid; Nitrosyl hydrogen sulfate; Nitrose; [Merck Index] Nitrosonium bisulfate; Nitrosonium hydrogen sulfate; Nitrosyl bisulfate; [CAMEO] Acido Nitrosolfonico; Cristalli di Chamber; Nitrosa; Nitrosil Idrogeno Solfato; Nitrosil Solfato; [IUCLID] UN2308; UN3456

Category

Acids, Inorganic

Description

Solid; [Merck Index] Sulfuric acid solution: Straw-colored liquid with a sharp odor; [CAMEO] Light yellow crystals; [Sigma-Aldrich MSDS]

Sources/Uses

Used for bleaching cereal; [Merck Index] Used to make dyes and other chemicals; [CAMEO] Used in the chemicals industry as an intermediate and solvent; [IUCLID]

Comments

Decomposed by moisture producing sulfuric and nitric acids; [Merck Index] Shipped in solution with sulfuric acid; A strong oxidizing agent; Reacts vigorously with water evolving sulfuric acid and nitric acids; A strong skin and eye irritant; [CAMEO] Reacts violently with water; Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Highly toxic by inhalation; Toxic by ingestion and skin absorption; [Sigma-Aldrich MSDS]

Exposure Assessment
Dangerous When Wet

Yes - A material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour; [ERG 2004]

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: