| Identification | More | [Name]
1-Pentanethiol | [CAS]
110-66-7 | [Synonyms]
1-Pentanethio1
1-PENTANETHIOL
AMYL HYDROSULFIDE
AMYL MERCAPTAN
AMYL SULFHYDRATE
MERCAPTAN C5
N-AMYL MERCAPTAN
N-PENTYL MERCAPTAN
PENTYL MERCAPTAN
1-Mercaptopentane
1-Pentanthiol
Amyl thioalcohol
amylmercaptan(non-specificname)
amylmercaptannormal
amylthioalcohol
CH3(CH2)4SH
Mercaptan amylique
mercaptanamilique(french)
mercaptanamylique
n-thioamylalcohol | [EINECS(EC#)]
203-789-1 | [Molecular Formula]
C5H12S | [MDL Number]
MFCD00004907 | [Molecular Weight]
104.21 | [MOL File]
110-66-7.mol |
| Chemical Properties | Back Directory | [Appearance]
CLEAR COLORLESS LIQUID | [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)
| [FEMA ]
4333 | 1-PENTANETHIOL | [refractive index ]
n20/D 1.446(lit.)
| [Fp ]
65 °F
| [storage temp. ]
Flammables area | [solubility ]
0.16g/l | [form ]
liquid | [pka]
10.51±0.10(Predicted) | [color ]
Water-white to yellow liquid | [Odor]
at 0.10 % in propylene glycol. sulfurous fatty roasted meaty vegetable | [biological source]
synthetic | [Odor Threshold]
0.00000078ppm | [Odor Type]
sulfurous | [Water Solubility ]
practically insoluble | [Sensitive ]
Air Sensitive | [JECFA Number]
1662 | [Merck ]
611 | [BRN ]
1730979 | [Dielectric constant]
4.5499999999999998 | [Exposure limits]
NIOSH: Ceiling 0.5 ppm(2.1 mg/m3) | [LogP]
2.74 | [CAS DataBase Reference]
110-66-7(CAS DataBase Reference) | [NIST Chemistry Reference]
1-Pentanethiol(110-66-7) | [EPA Substance Registry System]
110-66-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F,Xn | [Risk Statements ]
R11:Highly Flammable.
R20/22:Harmful by inhalation and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes .
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [OEL]
Ceiling: 0.5 ppm (2.1 mg/m3) [15-minute] | [RIDADR ]
UN 1111 3/PG 2
| [WGK Germany ]
3
| [RTECS ]
SA3150000
| [F ]
9-13-23 | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
II | [HS Code ]
29309090 | [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 | [Hazardous Substances Data]
110-66-7(Hazardous Substances Data) | [Toxicity]
LCLo ihl-rat: 2000 ppm/4H JIHTAB 31,343,49 |
| Hazard Information | Back Directory | [General Description]
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. | [Reactivity Profile]
AMYL MERCAPTAN(110-66-7) is incompatible with oxidizing agents, reducing agents, alkali metals, calcium hypochlorite, concentrated nitric acid . | [Air & Water Reactions]
Highly flammable. Insoluble in water. | [Health Hazard]
Inhalation may cause nausea because of offensive odor. Contact with eyes or skin causes slight irritation. Ingestion may cause vomiting. | [Chemical Properties]
CLEAR COLORLESS LIQUID | [Chemical Properties]
Colorless liquid; meaty aroma. | [Uses]
In organic syntheses. | [Definition]
ChEBI: 1-Pentanethiol is an alkanethiol. | [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. | [Solubility in organics]
Soluble in alcohol, perfume and flavor materials.
| [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.] |
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