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Agent Name Sulfur trioxide
CAS Number 7446-11-9
Formula O3-S
Major Category Toxic Gases & Vapors
Synonyms Sulfan; Sulfuric anhydride; Sulfur trioxide; SULFUR TRIOXIDE, INHIBITED; Sulfur trioxide, stabilized; [ChemFinder]
Category Other Toxic Gases & Vapors
Description Colorless to white solid that fumes in air at room temperature;
Sources/Uses Used as a sulfonating agent in the production of detergents and an intermediate in the production of sulfuric acid and explosives; [HSDB]
Comments Highly corrosive to skin; [Quick CPC] High inhalation exposure can cause pneumonitis and pulmonary edema; [NJ-HSFS] Can cause severe coughing at a concentration of 1 ppm; [HSDB]
Reference Link HSDB
Exposure Assessment
Skin Designation (ACGIH) Not evaluated
TIH Yes
Vapor Pressure 433 mm Hg
Adverse Effects
Toxic Pneumonitis Yes
Dermatotoxin Skin Burns
Links to Other NLM Databases
Health Studies Human Health Effects from Hazardous Substances Data Bank: SULFUR TRIOXIDE  
Toxicity Information Search TOXNET
Chemical Information Search ChemIDplus
Related Information in Haz-Map
Diseases Occupational diseases associated with exposure to this agent:





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Last updated: September, 2008