Sulfur trioxide
Suppliers
Names
[ CAS No. ]:
7446-11-9
[ Name ]:
Sulfur trioxide
[Synonym ]:
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
Chemical & Physical Properties
[ 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
MSDS
Toxicological Information
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)
Safety Information
[ Symbol ]:
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
Synthetic Route
Precursor & DownStream
Precursor
DownStream
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