General Information
Revision date
2016-10-15
Product name
Sulphur Dioxide
Chemical name
Sulphur Dioxide
CAS No.
7446-09-5
1.2.1 Relevant identified uses
Many
supplier name
Praxair Canada Inc
Manufacturer Name
Centre Drive
Icons in SDS
Company Information
company name
Praxair Canada Inc
Section 2
SECTION 2: Hazards identification
OSHA Emergency Overview CAUTION! Toxic, corrosive liquid and gas under pressure. Harmful if inhaled. Can cause eye, skin, and respiratory tract burns. Self-contained breathing apparatus must be worn by rescue workers. Odour: Choking above 3-5ppm.
Principle Routes of Exposure
Inhalation. Swallowing. Skin absorption. Skin contact. Eye contact. EFFECTS OF A SINGLE (ACUTE) OVEREXPOSURE: INHALATION: Overexposure to vapour concentrations moderately above the Threshold Limit Value (TLV) of 2 ppm may cause irritation of the eyes, nose, throat, and sinuses, with choking, coughing, and sometimes bronchoconstriction. Concentration of 50 – 100 ppm are considered dangerous, and exposures of 400 – 500 ppm are immediately life threatening. Exposure to high concentrations may result in pulmonary edema and paralysis. Lack of oxygen can cause death. SKIN CONTACT: Liquid is a severe irritant and may cause chemical burns. SKIN ABSORPTION: Prolonged or widespread skin contact with the liquid may result in the absorption of harmful amounts of material. SWALLOWING: Not a likely route of exposure. This product is a gas at normal temperature and pressure, but may cause irritation of the mouth and throat. EYE CONTACT: Vapour may cause irritation and conjunctival inflammation. Liquid may cause corneal burns and opacification with loss of vision. EFFECTS OF REPEATED (CHRONIC) OVEREXPOSURE: Chronic overexposure by inflammation may cause chemical chronic bronchitis with emphysema and pulmonary function impairment. The pulmonary effects are increased in the presence of respirable particles. May cause respiratory irritation and some nosebleeds. Repeated skin exposure may cause dermatitis. Repeated exposure to low concentration may cause systemic acidosis. OTHER EFFECTS OF OVEREXPOSURE: None known.
Medical Conditions Generally Aggravated by Exposure
OVEREXPOSURE Inhalation may aggravate asthma and inflammatory or fibrotic pulmonary disease. Because of its irritating properties, this material may aggravate an existing dermatitis. SIGNIFICANT LABORATORY DATA WITH POSSIBLE RELEVANCE TO HUMAN HEALTH HAZARD EVALUATION: None. CARCINOGENICITY: Sulphur dioxide is not listed by NTP or OSHA. The IARC lists it in Group 3, Unclassifiable as to carcinogenicity to humans.
