sulfurous acid
sulfur dioxide solution
Identification
| Name | sulfurous acid |
| CAS Number | 7782-99-2 |
| EINECS | 231-973-1 |
| FDA UNII | J1P7893F4J |
| Molecular Formula | H2 O3 S |
| Molecular Weight | 82.07854000 |
| MDL Number | MFCD00011335 |
| Nikkaji Number | J54.364K |
Regulatory
| FDA Mainterm (SATF) | 7782-99-2 ; SULFUROUS ACID |
| FDA Regulation | FDA PART 73 -- LISTING OF COLOR ADDITIVES EXEMPT FROM CERTIFICATION |
Physical Properties
| Food Chemicals Codex Listed | No |
| Specific Gravity | 1.03000 @ 25.00 °C. |
| Flash Point | 32.00 °F. TCC ( 0.00 °C. ) (est) |
| logP (o/w) | -1.579 (est) |
| Soluble in | water, 1e+006 mg/L @ 25 °C (est) |
No sensory data available
Safety Information
| Oral/Parenteral Toxicity | oral-human TDLo 500 ug/kg |
| Dermal Toxicity | Not determined |
| Inhalation Toxicity | Not determined |
GHS Classification
['GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)', 'GHS Label elements, including precautionary statements']
Safety in Use
| Category | caramelization assist |
| Recommendation for sulfurous acid usage levels up to | not for fragrance use. |
| Recommendation for sulfurous acid flavor usage levels up to | not for flavor use. |
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Potential Uses
Natural Occurrence
Synonyms
schweflige saure
sulfur dioxide solution
PubMed:
Elusive Sulfurous Acid: Gas-Phase Basicity and IR Signature of the Protonated Species.
PubMed:
Structural elucidation of chemical constituents from Benincasa hispida seeds and Carissa congesta roots by gas chromatography: Mass spectroscopy.
PubMed:
Comprehensive simultaneous kinetic study of sulfitolysis and thiosulfatolysis of tetrathionate ion: unravelling the unique pH dependence of thiosulfatolysis.
PubMed:
[Quality assessment of sulfur-fumigated paeoniae alba radix].
PubMed:
Cytotoxicity of sulfurous acid on cell membrane and bioactivity of Nitrosomonas europaea.
PubMed:
Acid-catalyzed autohydrolysis of wheat straw to improve sugar recovery.
PubMed:
A new spectrofluorimetric method for determination of losartan potassium in rabbit plasma and its application to pharmacokinetic study.
PubMed:
What are functional ionic liquids for the absorption of acidic gases?
PubMed:
Sulfur fumigation, a better or worse choice in preservation of Traditional Chinese Medicine?
PubMed:
The removal of hydrogen sulfide in solution by ferric and alum water treatment residuals.
PubMed:
Characterization of sulfurous acid, sulfite, and bisulfite aerosol systems.
PubMed:
Distillation and detection of SO2 using a microfluidic chip.
PubMed:
Significant conductivity enhancement of conductive poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) films through a treatment with organic carboxylic acids and inorganic acids.
PubMed:
Coupling interactions between sulfurous acid and the hydroperoxyl radical.
PubMed:
Ethanol production from H(2)SO (3)-steam-pretreated fresh sweet sorghum stem by simultaneous saccharification and fermentation.
PubMed:
X-ray crystallographic identification of bisulfite-uracil adduct as sodium 5,6-dihydrouracil 6-sulfonate.
PubMed:
Methanesulfinic acid reaction with OH: mechanism, rate constants, and atmospheric implications.
PubMed:
[Preparation of a "chronological table of main diseases in Japanese history" for pharmacy students of the 6-year program].
PubMed:
Ozonic acid and its ionic salts: ab initio probing of the O(4)(2)(-) dianion.
PubMed:
[Influence of reagent evaporation on other laboratory reagents and appropriate countermeasures].
PubMed:
Final report on the safety assessment of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, ammonium bisulfite, sodium metabisulfite and potassium metabisulfite.
PubMed:
Organosulfur compounds from garlic (Allium sativum) oxidizing canine erythrocytes.
PubMed:
About the stability of sulfurous acid (H2SO3) and its dimer.
PubMed:
Infrared spectroscopy of SO2 aqueous solutions.
PubMed:
[Respiratory manifestations after exposure to sulfurous anhydride in wine-cellar workers: 6 case reports].
PubMed:
Effect of pH on sulfite oxidation by Thiobacillus thiooxidans cells with sulfurous acid or sulfur dioxide as a possible substrate.
PubMed:
A simple procedure for crystallization of the Schiff reagent.
PubMed:
[A case of suicide suspected of poisoning from taking some agricultural chemicals].
PubMed:
Accumulation of nitrite and sulfite in yeast cells and synergistic depletion of the intracellular ATP content.
PubMed:
Mutual Antagonism of Sulfur Dioxide and Abscisic Acid in Their Effect on Stomatal Aperture in Broad Bean (Vicia faba L.) Epidermal Strips.
PubMed:
Quantitative aspects of the cytochemical Feulgen-DNA procedure studied on model systems and cell nuclei.
PubMed:
Electroretinographic study during acute Aramite intoxication of the white mouse.
PubMed:
[Various metabolic or toxic effects which can result from short term ingestion of sulfurous acid by the rat].
PubMed:
[Atmosphere--sulfurous acid gas].
PubMed:
[Sulfurous acid and its salts in food processing and storage. A review of literature].
PubMed:
Plain water as a rinsing agent preferable to sulfurous acid after the Feulgen nucleal reaction.
PubMed:
[Studies on the decomposition of tryptophan by sulfurous acid salts. 3. Isolation and structure of a greenish fluorescent product].
PubMed:
[Studies on the decomposition of tryptophan by sulfurous acid salts. II. Isolation of dehydroindigo-disulfite and its structure].
PubMed:
[Studies on the decomposition of tryptophan by sulfurous acid salts. I. Isolation and identification of indigotin, indirubin and other compounds produced by decomposition of tryptophan].
PubMed:
Analysis of rare earth sulfides, selenides and tellurides.
PubMed:
OXIDATION OF SULFUROUS ACID SALTS IN PHARMACEUTICAL SYSTEMS.
PubMed:
Kinectics of air oxidation of sulfurous acid salts.
PubMed:
[On the amount of soot, dust and sulfurous acid gas falling over northern Kyushu].
PubMed:
Sulfurous acid salts as pharmaceutical antioxidants.
PubMed:
[Color reactions of alcohols and ketones with fuchsin-sulfurous acid].
PubMed:
[Antagonism of sulfurous acid and ethanol in regard to adrenal cortex function].
PubMed:
An evaluation of staining techniques for demonstration of polysaccharides and nucleoproteins with Schiff (fuchsin sulfurous acid) reactions in cancer cytology.
PubMed:
The use of lead tetra-acetate to investigate the significance of the periodic acid-fuchsine sulfurous acid (PA-FSA) reaction.
PubMed:
Studies on the preparation and recoloration of fuchsin sulfurous acid.
PubMed:
Spermiogenesis of rat, mouse, hamster and guinea pig as revealed by the periodic acid-fuchsin sulfurous acid technique.
PubMed:
[Electrometric determination of sulfurous acid in deep colored fluids].
PubMed:
A histochemical study of staining the axis cylinder with fuchsin-sulfurous acid (Schiff's reagent).
PubMed:
The fuchsin-sulfurous acid test after periodate oxidation of heparin and allied polysaccharides.
PubMed:
Staining of elastic tissue by fuchsin-sulfurous acid; variability in different species.
PubMed:
The specificity of sex hormones on the tissue aldehyde shift in the rat kidney and of fuchsin sulfurous acid reagent on aldehydes.