EU/US Properties Organoleptics Cosmetics Suppliers Safety Safety in use Safety references References Other Blenders Uses Occurrence Synonyms Articles Notes
 

sulfurous acid
sulfur dioxide solution

Supplier Sponsors

CAS Number: 7782-99-2Picture of molecule3D/inchi
ECHA EINECS - REACH Pre-Reg:231-973-1
FDA UNII: J1P7893F4J
Nikkaji Web:J54.364K
MDL:MFCD00011335
XlogP3-AA:-0.50 (est)
Molecular Weight:82.07854000
Formula:H2 O3 S
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:caramelization assist
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist:Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
PubMed:Search
NCBI:Search
FDA Mainterm (SATF):7782-99-2 ; SULFUROUS ACID
FDA Regulation:
FDA PART 73 -- LISTING OF COLOR ADDITIVES EXEMPT FROM CERTIFICATION
Subpart A--Foods
Sec. 73.85 Caramel.
 
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)
 
Organoleptic Properties:
Odor and/or flavor descriptions from others (if found).
 
Cosmetic Information:
None found
 
Suppliers:
BOC Sciences
For experimental / research use only.
Sulfurous acid 95%
EMD Millipore
For experimental / research use only.
Sulfurous acid 5-6% SO2
sds
Santa Cruz Biotechnology
For experimental / research use only.
Sulfur dioxide solution
Sigma-Aldrich
For experimental / research use only.
Sulfur dioxide solution ACS reagent, ≥6%
 
Safety Information:
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-human TDLo 500 ug/kg
GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" GASTROINTESTINAL: OTHER CHANGES GASTROINTESTINAL: NAUSEA OR VOMITING
Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 54, Pg. 421, 1906.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
 
Safety in Use Information:
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.
 
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA Substance Registry Services (TSCA):7782-99-2
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :1100
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:1
sulfurous acid
Chemidplus:0007782992
EPA/NOAA CAMEO:hazardous materials
RTECS:WT2775000 for cas# 7782-99-2
 
References:
 sulfurous acid
NIST Chemistry WebBook:Search Inchi
Canada Domestic Sub. List:7782-99-2
Pubchem (cid):1100
Pubchem (sid):135019902
 
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
CHEBI:View
CHEMBL:View
UM BBD:Search
KEGG (GenomeNet):C00094
HMDB (The Human Metabolome Database):HMDB34829
FooDB:FDB013391
Export Tariff Code:2811.19.5050
FDA Listing of Food Additive Status:View
ChemSpider:View
Wikipedia:View
 
Potential Blenders and core components note
None Found
 
Potential Uses:
None Found
 
Occurrence (nature, food, other):note
 not found in nature
 
Synonyms:
 schweflige saure
 sulfur dioxide solution
 

Articles:

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.
 
Notes:
Food additive listed on the EAFUS Food Additive Database (Jan. 2001) Sulfurous acid (not to be confused with Sulfuric acid) is the chemical compound with the formula H2SO3. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase. The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogensulfite) and sulfite. Aqueous solutions of sulfur dioxide, which sometimes are referred to as sulfurous acid are used as reducing agents and as disinfectants, as are solutions of bisulfite and sulfite salts. They are also mild bleaches, and are used for materials which may be damaged by chlorine-containing bleaches. (Wikipedia)
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