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Product Name: |
Furfuryl mercaptan |
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Synonyms: |
(2-furanyl)methylmercaptan;2-(mercaptomethyl)furan;2-furfurylmercaptan;2-Furfurylthiol;2-Furylmethyl mercaptan;2-furylmethylmercaptan;2-mercaptomethylfuran;-Furylmethyl mercaptan |
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CAS: |
98-02-2 |
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MF: |
C5H6OS |
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MW: |
114.17 |
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EINECS: |
202-628-2 |
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Product Categories: |
Sulfides flavors;Furans;thiol Flavor |
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Mol File: |
98-02-2.mol |
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Melting point |
157.5 °C |
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Boiling point |
155 °C(lit.) |
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density |
1.132 g/mL at 25 °C(lit.) |
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FEMA |
2493 | FURFURYL MERCAPTAN |
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refractive index |
n20/D 1.531(lit.) |
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Fp |
113 °F |
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storage temp. |
Flammables area |
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pka |
9.59±0.10(Predicted) |
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form |
Liquid |
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color |
Clear colorless to pale yellow |
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Water Solubility |
insoluble |
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Sensitive |
Air Sensitive |
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JECFA Number |
1072 |
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BRN |
383594 |
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CAS DataBase Reference |
98-02-2(CAS DataBase Reference) |
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NIST Chemistry Reference |
2-Furanmethanethiol(98-02-2) |
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EPA Substance Registry System |
2-Furanmethanethiol (98-02-2) |
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Hazard Codes |
F,Xn |
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Risk Statements |
10-36/37-20/21/22 |
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Safety Statements |
23-24/25-16-36-26-7/9 |
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RIDADR |
UN 3336 3/PG 3 |
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WGK Germany |
3 |
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RTECS |
LU2100000 |
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F |
10-13-23 |
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TSCA |
Yes |
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HazardClass |
3 |
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PackingGroup |
III |
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HS Code |
29321900 |
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Description |
Furfuryl mercaptan has a characteristic unpleasant odor. It is prepared by reacting thiourea and furfuryl chloride with subsequent hydrolysis of the reaction product; also by reduction of difurfuryl disulfide in alcoholic solution using zinc dust and a small amount of acetic acid or using activated alumina. Furfuryl mercaptan tends to polymerize when heated in the presence of mineral acids. |
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Chemical Properties |
Furfuryl mercaptan has a characteristic unpleasant odor. |
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Chemical Properties |
clear colorless to pale yellow liquid |
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Chemical Properties |
2-Furylmethanethiol is an important constituent of the aroma of roasted coffee. It is a liquid with an unpleasant odor, which becomes like coffee when diluted. |
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Uses |
Furfuryl Mercaptam is a volatile flavor component of corn tortilla chips. |
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Preparation |
Furfuryl mercaptan is prepared from furfuryl alcohol, thiourea, and hydrogen chloride.The resulting S-furfurylisothiouronium chloride is cleaved with sodium hydroxide to give furfuryl mercaptan. |
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Aroma threshold values |
Detection: 0.005 to 0.01 ppb; aroma characteristics at 0.01%: intense sulfurous onion impact, lacrimator, slightly skunk-like with a dairy nuance and a hint of savory and coffee-like notes. |
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Taste threshold values |
Taste characteristics at 0.2 to 1 ppb: sulfureous, roasted, onion, garlic and coffee. |
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Safety Profile |
Poison by intraperitoneal route. Experimental reproductive effects. Used as a flavoring in chocolate, fruit, nuts, and coffee. When heated to decomposition it emits toxic fumes of SOx. See also MERCAPTANS. |
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Chemical Synthesis |
Prepared by reacting thiourea and furfuryl chloride with subsequent hydrolysis of the reaction product; also by reduction of difurfuryl disulfde in alcoholic solution using zinc dust and a small amount of acetic acid or using activated alumina. |
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Raw materials |
Etanol-->Sodium hydroxide-->Formaldehyde-->Phosphorus pentasulfide-->CHLOROETHANE-->Sodium hydrosulfide-->2-Chloromethylfuran |
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Preparation Products |
Phorate-->Furfuryl methyl sulfide-->4-[(2-FURYLMETHYL)THIO]-3-NITROBENZALDEHYDE-->Difurfurylsulfide |
