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Sulfurous Acid

Names

[ CAS No. ]:
7782-99-2

[ Name ]:
Sulfurous Acid

[Synonym ]:
Sulphurous acid
sodium sulfite
hydrogen sulphite (bisulphite)
SULFUROUS ACID
dihydroxy sulphoxide
Schweflige saure [German]
acide sulfureux
Sulfur dioxide solution
acido sulfuroso
MFCD00011335
EINECS 231-973-1
UN1833

Chemical & Physical Properties

[ Density]:
1.03 g/mL at 25 °C(lit.)

[ Molecular Formula ]:
H2O3S

[ Molecular Weight ]:
82.07910

[ Exact Mass ]:
81.97250

[ PSA ]:
76.74000

[ LogP ]:
0.54680

[ Index of Refraction ]:
1.788

[ Stability ]:
Stable. Incompatible with strong bases.

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
WT2775000
CHEMICAL NAME :
Sulfurous acid
CAS REGISTRY NUMBER :
7782-99-2
LAST UPDATED :
199701
DATA ITEMS CITED :
4
MOLECULAR FORMULA :
H2-O3-S
MOLECULAR WEIGHT :
82.08
WISWESSER LINE NOTATION :
..H2.S-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human
DOSE/DURATION :
500 ug/kg
TOXIC EFFECTS :
Gastrointestinal - hypermotility, diarrhea Gastrointestinal - nausea or vomiting Gastrointestinal - other changes
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 54,421,1906 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 82237 No. of Facilities: 97 (estimated) No. of Industries: 5 No. of Occupations: 5 No. of Employees: 722 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 82237 No. of Facilities: 30 (estimated) No. of Industries: 3 No. of Occupations: 3 No. of Employees: 521 (estimated) No. of Female Employees: 150 (estimated)

Safety Information

[ Hazard Codes ]:
C

[ Risk Phrases ]:
R20

[ Safety Phrases ]:
S26-S36/37/39-S45

[ RIDADR ]:
UN 1833 8/PG 2

[ WGK Germany ]:
1

[ RTECS ]:
WT2775000

[ Packaging Group ]:
II

[ Hazard Class ]:
8

Synthetic Route

Precursor & DownStream


Related Compounds