Praxair Chlorosilane A-160

SECTION 2: Hazards identification

OSHA EMERGENCY OVERVIEW DANGER! Corrosive liquid and gas under pressure. May be fatal if inhaled in high concentrations. Causes eye and skin burns. Causes severe irritation of the respiratory tract. Symptoms may be delayed. Contact with water may cause violent reaction. Self-contained breathing apparatus and protective clothing must be worn by rescue workers Under ambient conditions, this is a clear liquid with a pungent, suffocating odor. OSHA REGULATORY STATUS: This material is considered hazardous by the OSHA Hazard Communications Standard (29 CFR 1910.1200).

Potential health effects

Effects of a Single (Acute) Overexposure Inhalation. Low concentrations will irritate the eyes and respiratory tract, experienced as eye discomfort, cough, excess sputum, and chest discomfort. Exposure to higher concentrations is likely to result in inhalation of enough harmful material to cause potentially lethal lung injury. Skin Contact. Silicon tetrachloride is corrosive and causes chemical burns. Prolonged or widespread skin contact may result in absorption of potentially harmful amounts of material. Copyright © 1984, 1988, 1992, 1997, 2006-2007, Praxair Technology, Inc. Swallowing. Highly to seriously toxic. May cause severe burns of the mouth, throat, esophagus, and stomach, with severe abdominal and chest pain. Nausea, vomiting, diarrhea, dizziness, drowsiness, faintness, circulatory collapse, and coma will occur. Eye Contact. Vapor severely irritates the eyes causing pain, excess lachrymation (tears), closure of the eyelids, marked excess redness, and swelling of the conjunctiva. High concentrations of hydrogen chloride vapor, if formed, could injure the cornea. Splash contamination may cause severe conjunctivitis, seen as marked excess redness and swelling of the conjunctiva, discharge, iritis, and severe corneal injury, that if untreated, could result in permanent blindness. Effects of Repeated (Chronic) Overexposure. Prolonged or repeated exposure to hydrogen chloride vapor may discolor and erode the teeth, ulcerate the nasal mucosa, and cause the nose and gums to bleed. (See section 8.) Other Effects of Overexposure. None known.

Medical Conditions Generally Aggravated by Exposure

Overexposure. Inhalation may aggravate asthma and inflammatory of or fibrotic pulmonary disease. Skin irritation may aggravate an existing dermatitis. CARCINOGENICITY: Silicon tetrachloride is not listed by NTP, OSHA, and IARC.

Environmental effects

None known. For further information, see section 12, Ecological Information.