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33275 Sulfurous acid, ACS, 6.0% SO2 min

CAS Number
7782-99-2
Synonyms
Sulfur dioxide solution

Stock No. Size Price ($) Quantity Availability
33275-AP 500ml 63.00
33275-AY *4x500ml 239.00
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Sulfurous acid, ACS, 6.0% SO2 min

MDL
MFCD00011335
EINECS
231-973-1

Chemical Properties

Formula
H2SO3
Formula Weight
82.08
Form
Liquid
Density
1.030
Storage & Sensitivity
Air Sensitive. Store under Argon. Ambient temperatures.
Solubility
Miscible with water.

Grade Specifications

Maximum level of impurities: Residue after ignition 0.005%, Cl 5ppm, Heavy Metals (as Pb) 2ppm, Fe 5ppm

Applications

Sulfurous acid is used as a reducing agent, bleaching agent and disinfectant. It is utilized for bleaching of moistened wool, straw for hats, and other materials injured by chlorine. It finds application as a disinfectant as well as used externally for its parasiticidal effect in various skin diseases. Its derivative viz. sulfites are included in antiseptics, antifermentatives, and antizymotics.

Notes

A solution of SO{2} in waterAir sensitive. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents, zinc, strong reducing agents and strong bases.

Literature References

Gaines, T. W.; Nakano, T.; Chujo, Y.; Trigg, E. B.; Winey, K. I.; Wagener, K. B. Precise Sulfite Functionalization of Polyolefins via ADMET Polymerization. ACS Macro Lett. 2015, 4 (6), 624-627.

Sinha, R. K.; Scuderi, D.; Maitre, P.; Chiavarino, B.; Crestoni, M. E.; Fornarini, S. Elusive sulfurous acid: Gas-phase basicity and IR signature of the protonated species. J. Phys. Chem. Lett. 2015, 6 (9), 1605-1610.

GHS Hazard and Precautionary Statements

Hazard Statements: H332-H314-H318

Harmful if inhaled. Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a

Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,8976
Hazard Class
8
Packing Group
II
Harmonized Tariff Code
2811.19
TSCA
Yes
RTECS
WT2775000

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