Basic information Safety Price Use Preparation Products And Raw materials Supplier Related
Sulfur trioxide Structure

Sulfur trioxide

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)
EWG's Food Scores 1
NIST Chemistry Reference Sulfur trioxide(7446-11-9)
EPA Substance Registry System Sulfur trioxide (7446-11-9)


Signal wordDanger
Hazard statements H314-H335
Precautionary statements P261-P280-P305+P351+P338-P310
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)
NFPA 704:
4 2

Sulfur trioxide Price

Sulfur trioxide Chemical Properties,Usage,Production

Sulfur trioxide Supplier