Basic information Safety Related Supplier

Sulfur trioxide

Product NameSulfur trioxide

CAS7446-11-9

MFO3S

MW80.06

EINECS231-197-3

MOL File7446-11-9.mol

Chemical Properties

Melting point 16.8 °C(lit.)
Boiling point 44.8 °C
Density  1.97 g/mL at 25 °C(lit.)
vapor density  2.8 (vs air)
vapor pressure  280 mm Hg ( 25 °C)
storage temp.  Indoors
form  colorless liquid
Water Solubility  reacts violently
Merck  13,9069
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.
CAS DataBase Reference 7446-11-9(CAS DataBase Reference)
NIST Chemistry Reference Sulfur trioxide(7446-11-9)
EPA Substance Registry System Sulfur trioxide (7446-11-9)

Safety Information

Hazard Codes  O,T+,C
Risk Statements  45-8-14-26-34-37-35
Safety Statements  53-17-26-36/37/39-45-8-25-30
RIDADR  UN 1829 8/PG 1
WGK Germany  1
RTECS  WT4830000
HazardClass  8
PackingGroup  I
Hazardous Substances Data 7446-11-9(Hazardous Substances Data)

MSDS

Usage And Synthesis

Sulfur trioxide Supplier