ChemicalBook > CAS DataBase List > 1-Pentanethiol

1-Pentanethiol

Product Name
1-Pentanethiol
CAS No.
110-66-7
Chemical Name
1-Pentanethiol
Synonyms
Pentanethiol;Pentane-1-thiol;PENTYL MERCAPTAN;Pentalarm;pentanthiol;CH3(CH2)4SH;MERCAPTAN C5;1-Pentanthiol;AMYL MERCAPTAN;1-Pentanethio1
CBNumber
CB2108908
Molecular Formula
C5H12S
Formula Weight
104.21
MOL File
110-66-7.mol
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1-Pentanethiol Property

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
Flash point:
65 °F
storage temp. 
Store below +30°C.
solubility 
0.16g/l
pka
10.51±0.10(Predicted)
form 
liquid
color 
Water-white to yellow liquid
Odor
at 0.10 % in propylene glycol. sulfurous fatty roasted meaty vegetable
Odor Type
sulfurous
biological source
synthetic
Odor Threshold
0.00000078ppm
Water Solubility 
practically insoluble
Sensitive 
Air Sensitive
JECFA Number
1662
Merck 
14,611
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
Amyl mercaptan (110-66-7)
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Safety

Hazard Codes 
F,Xn
Risk Statements 
11-20/22-36/37/38
Safety Statements 
16-23-24/25-37/39-26
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
Hazardous Substances Data
110-66-7(Hazardous Substances Data)
Toxicity
LCLo ihl-rat: 2000 ppm/4H JIHTAB 31,343,49
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
P7908
Product name
1-Pentanethiol
Purity
98%
Packaging
25g
Price
$78.56
Updated
2025/07/31
Sigma-Aldrich
Product number
P7908
Product name
1-Pentanethiol
Purity
98%
Packaging
100g
Price
$279
Updated
2025/07/31
Sigma-Aldrich
Product number
8.41749
Product name
1-Pentanethiol
Purity
for synthesis
Packaging
50ML
Price
$200
Updated
2023/01/07
TCI Chemical
Product number
P0053
Product name
1-Pentanethiol
Purity
>98.0%(GC)(T)
Packaging
25mL
Price
$59
Updated
2025/07/31
TCI Chemical
Product number
P0053
Product name
1-Pentanethiol
Purity
>98.0%(GC)(T)
Packaging
500mL
Price
$495
Updated
2025/07/31
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1-Pentanethiol Chemical Properties,Usage,Production

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.

Definition

ChEBI: 1-Pentanethiol is an alkanethiol.

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

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.]

1-Pentanethiol Preparation Products And Raw materials

Raw materials

Preparation Products

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1-Pentanethiol Suppliers

Americas 1 Belgium 1 Canada 2 China 122 Europe 3 France 2 Germany 6 India 2 Japan 4 Norway 1 Switzerland 2 The Netherlands 1 United Kingdom 7 United States 22 Global 176
Meryer (Shanghai) Chemical Technology Co., Ltd.
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View Lastest Price from 1-Pentanethiol manufacturers

R&D Scientific Inc.
Product
1-Pentanethiol 110-66-7
Price
US $786.00/Kg
Min. Order
0.100Kg
Purity
98
Supply Ability
5000 Kg
Release date
2024-11-18
Hangzhou ICH Biofarm Co., Ltd
Product
1-PENTANETHIOL 110-66-7
Price
US $0.00-0.00/kg
Min. Order
0.10000000149011612kg
Purity
99.0%min
Supply Ability
20000kg
Release date
2023-06-29
Zhuozhou Wenxi import and Export Co., Ltd
Product
1-Pentanethiol 110-66-7
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-06-27

110-66-7, 1-PentanethiolRelated Search:

Isoamyl nitrite PYRITHIOXIN PYRITHIOXIN DIHYDROCHLORIDE Ethanethiol 1,2-Ethanedithiol 1-Dodecanethiol 2-Ethylhexyl 10-ethyl-4-[[2-[(2-ethylhexyl)oxy]-2-oxoethyl]thio]-4-methyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate Sodium thiomethoxide METHYL MERCAPTAN 2,4-DIMETHYLSULFOLANE 1,6-Hexanedithiol CYCLOHEXENE SULFIDE Octadecanethiol 1-Heptanethiol 1-Nonanethiol 1,5-Pentanedithiol 1-Decanethiol 1-Mercaptooctane

  • N-PENTYL MERCAPTAN
  • PENTYL MERCAPTAN
  • N-AMYL MERCAPTAN
  • 1-Mercaptopentane
  • 1-Pentanthiol
  • Amyl thioalcohol
  • amylmercaptan(non-specificname)
  • amylmercaptannormal
  • thioamylalcohol
  • AMYL HYDROSULFIDE
  • AMYL MERCAPTAN
  • AMYL SULFHYDRATE
  • MERCAPTAN C5
  • 1-Pentanethio1
  • 1-PENTANETHIOL
  • N-Amylmercaptane
  • N-Pentylmercaptane
  • Pentan-1-thiol
  • Amyl mercaptan, Mercaptan C5, Pentyl mercaptan
  • 1-Pentanethiol,98%
  • 1-Pentanethiol,Amyl mercaptan, Mercaptan C5, Pentyl mercaptan
  • Amyl Mercaptan Pentyl Mercaptan
  • pentanthiol
  • 1-Pentanethiol 98%
  • N-amyl mercaptain
  • amylthioalcohol
  • CH3(CH2)4SH
  • Mercaptan amylique
  • mercaptanamilique(french)
  • mercaptanamylique
  • n-thioamylalcohol
  • Pentalarm
  • Pentane-1-thiol
  • Pentanethiol
  • pentanethiol(non-specificname)
  • pentanethiolnormal
  • 1-Pentanethiol&gt
  • 1-Pentanethiol (8CI, 9CI, ACI)
  • 1-Pentanethiol/N-PENTYL MERCAPTAN
  • n-Amyl mercaptan,98%
  • Phloroglucinol Impurity 114
  • 110-66-7
  • CH3CH23CH2SH
  • 110667
  • C5H11SH
  • C5H12S
  • Building Blocks
  • Thiols/Mercaptans
  • Sulfur Compounds
  • Organic Building Blocks