7446-11-9

7446-11-9 structure
7446-11-9 structure

Name sulfur trioxide
Synonyms Schwefeltrioxid
MFCD00011452
SULPHUR TRIOXIDE
Sulfan
Sulfur oxide (SO3)
Sulfuric oxide
SULFAN(R)
sulfuric acid anhydride
SO3
EINECS 231-197-3
Sulfur trioxide
SULFURIC ANHYDRIDE
sulfur(VI) oxide
Density 1.97 g/mL at 25 °C(lit.)
Boiling Point 44.8 °C
Melting Point 16.8 °C(lit.)
Molecular Formula O3S
Molecular Weight 80.06320
Exact Mass 79.95680
PSA 83.30000
LogP 0.29180
Vapour density 2.8 (vs air)
Vapour Pressure 280 mm Hg ( 25 °C)
Stability Stable. Incompatible with organic materials, finely powdered metals, bases, water, cyanides and a wide variety of other chemicals. Reacts violently with water, oxygen and other chemicals - read a full data sheet before use.
Water Solubility reacts violently

CHEMICAL IDENTIFICATION

RTECS NUMBER :
WT4830000
CHEMICAL NAME :
Sulfur trioxide
CAS REGISTRY NUMBER :
7446-11-9
LAST UPDATED :
199710
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
O3-S
MOLECULAR WEIGHT :
80.06
WISWESSER LINE NOTATION :
S O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Human
DOSE/DURATION :
30 mg/m3
TOXIC EFFECTS :
Sense Organs and Special Senses (Olfaction) - effect, not otherwise specified Lungs, Thorax, or Respiration - cough Lungs, Thorax, or Respiration - other changes
REFERENCE :
JPBAA7 Journal of Pathology and Bacteriology. (London, UK) V.1-96, 1892-1968. For publisher information, see JPTLAS. Volume(issue)/page/year: 68,197,1954
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
30 mg/m3/6H
TOXIC EFFECTS :
Liver - hepatitis (hepatocellular necrosis), diffuse Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Endocrine - other changes
REFERENCE :
JPBAA7 Journal of Pathology and Bacteriology. (London, UK) V.1-96, 1892-1968. For publisher information, see JPTLAS. Volume(issue)/page/year: 68,197,1954 *** REVIEWS *** IARC Cancer Review:Human Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 54,41,1992 IARC Cancer Review:Group 1 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 54,41,1992 TOXICOLOGY REVIEW AEHLAU Archives of Environmental Health. (Heldref Pub., 4000 Albemarle St., NW, Washington, DC 20016) V.1- 1960- Volume(issue)/page/year: 16,903,1968 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-FINLAND:STEL 1 ppm (3 mg/m3);Skin JAN 1993 OEL-HUNGARY:STEL 1 mg/m3 JAN 1993 OEL-POLAND:TWA 1 mg/m3 JAN 1993 OEL-RUSSIA:STEL 1 mg/m3;Skin JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M0745 No. of Facilities: 1316 (estimated) No. of Industries: 20 No. of Occupations: 39 No. of Employees: 51404 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M0745 No. of Facilities: 2524 (estimated) No. of Industries: 17 No. of Occupations: 27 No. of Employees: 56102 (estimated) No. of Female Employees: 3077 (estimated)
Symbol GHS05 GHS07
GHS05, GHS07
Signal Word Danger
Hazard Statements H314-H335
Supplemental HS Reacts violently with water.
Precautionary Statements P261-P280-P305 + P351 + P338-P310
Personal Protective Equipment Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US)
Hazard Codes C:Corrosive;
Risk Phrases R14;R34
Safety Phrases S53-S17-S26-S36/37/39-S45-S8-S25
RIDADR UN 1829 8/PG 1
WGK Germany 1
RTECS WT4830000
Packaging Group I
Hazard Class 8