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| 1-Pentanethiol Basic information |
| Product Name: | 1-Pentanethiol | | Synonyms: | N-PENTYL MERCAPTAN;PENTYL MERCAPTAN;N-AMYL MERCAPTAN;1-Mercaptopentane;1-Pentanthiol;Amyl thioalcohol;amylmercaptan(non-specificname);amylmercaptannormal | | CAS: | 110-66-7 | | MF: | C5H12S | | MW: | 104.21 | | EINECS: | 203-789-1 | | Product Categories: | | Mol File: | 110-66-7.mol |
| 1-Pentanethiol Chemical Properties |
| Melting point | -76°C | | Boiling point | 126 °C (lit.) | | density | 0.84 g/mL at 25 °C (lit.) | | vapor density | 3.59 | | vapor pressure | 27.4 mm Hg ( 37.7 °C) | | refractive index | n20/D 1.446(lit.) | | FEMA | 4333 | 1-PENTANETHIOL | | Fp | 65 °F | | storage temp. | Store below +30°C. | | solubility | 0.16g/l | | form | liquid | | pka | 10.51±0.10(Predicted) | | color | Water-white to yellow liquid | | Odor Threshold | 0.00000078ppm | | Water Solubility | practically insoluble | | Sensitive | Air Sensitive | | Merck | 14,611 | | JECFA Number | 1662 | | BRN | 1730979 | | Exposure limits | NIOSH: Ceiling 0.5 ppm(2.1 mg/m3) | | CAS DataBase Reference | 110-66-7(CAS DataBase Reference) | | NIST Chemistry Reference | 1-Pentanethiol(110-66-7) | | EPA Substance Registry System | Amyl mercaptan (110-66-7) |
| 1-Pentanethiol Usage And Synthesis |
| Chemical Properties | clear colorless liquid; meaty aroma. slightly soluble in water, easily soluble in alcohol and ether. | | Uses | 1-Pentanethiol is a raw material for organic synthesis. It is mainly used in the organic synthesis of sulfur compounds. | | Uses | 1-Pentanethiol can be used as additives for hair coloring agents. | | Preparation | 1-Pentanethiol is synthesized from n-pentyl alcohol and hydrogen sulfide catalyzed by thorium dioxide. | | Aroma threshold values | High strength odor; recommend smelling in a 0.10% solution or less. | | General Description | 1-Pentanethiol appears as a clear colorless to light-yellow liquid with an offensive odor. Flash point 65°F. Less dense than water and insoluble in water. Hence floats on water. Vapors are heavier than air. May be toxic by inhalation. | | Air & Water Reactions | Highly flammable. Insoluble in water. | | Reactivity Profile | 1-Pentanethiol is incompatible with oxidizing agents, reducing agents, alkali metals, calcium hypochlorite, concentrated nitric acid . | | Health Hazard | Inhalation may cause nausea because of offensive odor. Contact with eyes or skin causes slight irritation. Ingestion may cause vomiting. | | Safety Profile | Moderately toxic by inhalation. A weak sensitizer and allergen. Local contact may cause contact dermatitis. A flammable liquid and dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidming materials. Hypergolic reaction with concentrated nitric acid. To fight fire, use foam, CO2, dry chemical. See also MERCAPTANS | | Purification Methods | Dissolve the thiol in aqueous 20% NaOH, then extract with a small amount of diethyl ether. The aqueous solution is acidified slightly with 15% H2SO4, and the thiol is distilled out, dried with CaSO4 or CaCl2, and fractionally distilled under nitrogen. [Ellis & Reid J Am Chem Soc 54 1674 1932, Beilstein 1 IV 1453.] |
| 1-Pentanethiol Preparation Products And Raw materials |
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