thioacetic acid
ethanethioic S-acid
Identification
| Name | thioacetic acid |
| IUPAC | ethanethioic S-acid |
| CAS Number | 507-09-5 |
| EINECS | 208-063-8 |
| FDA UNII | PS92MLC0FQ |
| Molecular Formula | C2 H4 O S |
| Molecular Weight | 76.11808000 |
| MDL Number | MFCD00004853 |
| Nikkaji Number | J35.909B |
| Beilstein | 1733298 |
Regulatory
| JECFA Food Flavoring | 1676 thioacetic acid |
| FEMA Number | 4210 |
| FDA | No longer provide for the use of these seven synthetic flavoring substances |
| FDA Mainterm (SATF) | 507-09-5 ; THIOACETIC ACID |
Physical Properties
| Appearance | pale yellow green clear liquid (est) |
| Assay | 95.00 to 100.00 |
| Food Chemicals Codex Listed | No |
| Specific Gravity | 1.06600 to 1.07200 @ 25.00 °C. |
| Pounds per Gallon - (est). | 8.870 to 8.920 |
| Refractive Index | 1.45900 to 1.46500 @ 20.00 °C. |
| Boiling Point | 88.00 °C. @ 760.00 mm Hg |
| Vapor Pressure | 50.410000 mmHg @ 25.00 °C. (est) |
| Flash Point | 52.00 °F. TCC ( 11.11 °C. ) |
| logP (o/w) | 0.528 (est) |
| Soluble in | propylene glycol |
Organoleptic Properties
| Odor Description | at 0.01 % in propylene glycol. |
Safety Information
| Preferred SDS | View |
| European information | Most important hazard(s): |
| Oral/Parenteral Toxicity | oral-rat LD50 > 200 mg/kg |
| Dermal Toxicity | skin-rat LD50 > 2000 mg/kg |
| 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 | flavoring agents |
| Recommendation for thioacetic acid usage levels up to | not for fragrance use. |
| Maximised Survey-derived Daily Intakes (MSDI-EU) | 0.0012 (μg/capita/day) |
| Modified Theoretical Added Maximum Daily Intake (mTAMDI) | 160 (μg/person/day) |
| Threshold of Concern | 1800 (μg/person/day) |
| Structure Class | I |
| baked goods | 1.00000 |
| beverages(nonalcoholic) | 0.10000 |
| beverages(alcoholic) | 0.10000 |
| breakfast cereal | 0.50000 |
| cheese | 1.00000 |
| chewing gum | - |
| condiments / relishes | 0.20000 |
| confectionery froastings | 0.10000 |
| egg products | 1.00000 |
| fats / oils | 3.00000 |
| fish products | 1.00000 |
| frozen dairy | 0.20000 |
| fruit ices | 0.20000 |
| gelatins / puddings | 0.20000 |
| granulated sugar | - |
| gravies | 0.10000 |
| hard candy | 0.20000 |
| imitation dairy | 0.50000 |
| instant coffee / tea | 0.10000 |
| jams / jellies | 0.10000 |
| meat products | 1.00000 |
| milk products | 0.50000 |
| nut products | 0.10000 |
| other grains | - |
| poultry | 1.00000 |
| processed fruits | 0.20000 |
| processed vegetables | 0.20000 |
| reconstituted vegetables | 0.10000 |
| seasonings / flavors | 1.00000 |
| snack foods | 1.00000 |
| soft candy | 0.20000 |
| soups | 0.20000 |
| sugar substitutes | - |
| sweet sauces | 0.20000 |
| Dairy products, excluding products of category 02.0 (01.0) | 0.40000 |
| Fats and oils, and fat emulsions (type water-in-oil) (02.0) | 0.20000 |
| Edible ices, including sherbet and sorbet (03.0) | 0.40000 |
| Processed fruit (04.1) | 0.30000 |
| Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) | - |
| Confectionery (05.0) | 0.40000 |
| Chewing gum (05.3) | - |
| Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) | 0.20000 |
| Bakery wares (07.0) | 0.40000 |
| Meat and meat products, including poultry and game (08.0) | 0.10000 |
| Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) | 0.10000 |
| Eggs and egg products (10.0) | - |
| Sweeteners, including honey (11.0) | - |
| Salts, spices, soups, sauces, salads, protein products, etc. (12.0) | 0.20000 |
| Foodstuffs intended for particular nutritional uses (13.0) | 0.40000 |
| Non-alcoholic ("soft") beverages, excl. dairy products (14.1) | 0.20000 |
| Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) | 0.40000 |
| Ready-to-eat savouries (15.0) | 1.00000 |
| Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) | 0.20000 |
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Potential Uses
Natural Occurrence
Synonyms
acetothioic acid
acetyl mercaptan
ethane thioic acid
ethanethioic S-acid
schiff's reagent
thioacetic S-acid
thiol acetic acid
thionoacetic acid
US Patents:
3,931,270 - Process for producing 2-thia substituted 1,4 diones