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3-Methyl-2-butanethiol structure
Chemical Name:
FEMA 3304;SEC-ISOAMYLMERCAPTAN;3-methyl-2-Butanethio;2-Methyl-3-butanethiol;3-METHYL-2-BUTANETHIOL;3-METHYLBUTANE-2-THIOL;3-methy-2-butane thiol;3-Methyl-butyl-2-thiol;2-butanethiol,3-methyl-;3-Methyl-2-butyl Mercaptan
Molecular Formula:
Formula Weight:
MOL File:

3-Methyl-2-butanethiol Properties

Melting point:
-109.95°C (estimate)
Boiling point:
109-112 °C(lit.)
0.841 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.444(lit.)
Flash point:
60 °F
liquid (estimate)
Air Sensitive
JECFA Number
CAS DataBase Reference
2084-18-6(CAS DataBase Reference)
NIST Chemistry Reference
2-Butanethiol, 3-methyl-(2084-18-6)
EPA Substance Registry System
2-Butanethiol, 3-methyl-(2084-18-6)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  F
Risk Statements  11
Safety Statements  16-33-36-24/25
RIDADR  UN 3336 3/PG 2
WGK Germany  3
HazardClass  3
PackingGroup  II
HS Code  29309090
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
2 0
Health   2 Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine)
Flammability   3 Liquids and solids (including finely divided suspended solids) that can be ignited under almost all ambient temperature conditions . Liquids having a flash point below 22.8 °C (73 °F) and having a boiling point at or above 37.8 °C (100 °F) or having a flash point between 22.8 and 37.8 °C (73 and 100 °F). (e.g. gasoline, acetone)
Instability   0 Normally stable, even under fire exposure conditions, and is not reactive with water (e.g. helium,N2)

(NFPA, 2010)

3-Methyl-2-butanethiol price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W330418 3-Methyl-2-butanethiol ≥98% 2084-18-6 sample-k $40 2018-11-20 Buy
Sigma-Aldrich W330418 3-Methyl-2-butanethiol ≥98% 2084-18-6 1kg-k $1610 2018-11-20 Buy
TCI Chemical M2141 3-Methyl-2-butanethiol >98.0%(GC) 2084-18-6 25g $75 2018-11-22 Buy
Alfa Aesar B22330 3-Methyl-2-butanethiol, 95%, remainder mainly 2-methyl-1-butanethiol 2084-18-6 5g $41.4 2018-11-13 Buy
Alfa Aesar B22330 3-Methyl-2-butanethiol, 95%, remainder mainly 2-methyl-1-butanethiol 2084-18-6 25g $112 2018-11-13 Buy

3-Methyl-2-butanethiol Chemical Properties,Uses,Production


3-Methyl-2-butanethiol has a repulsive, characteristic mercaptanlike odor. Prepared from isoamyl chloride and potassium sulfhydrate; also the corresponding sodium salt can be prepared from diisopentyl-disulfide and sodium metal in liquid ammonia.

Chemical Properties

3-Methyl-1-butanethiol has a repulsive, characteristic mercaptan-like odor.

Chemical Properties

Colorless liquid; offensive odor.Insoluble in water; soluble in organic solvents.


Reported found in cooked beef.


Polymerization modifier, insecticide intermediate, vulcanization accelerator intermediate, nonionic surface-active agent.


From isoamyl chloride and potassium sulfhydrate; also, the corresponding sodium salt can be prepared from diisopentyldisulfide and sodium metal in liquid ammonia.


Flammable, dangerous fire risk.

3-Methyl-2-butanethiol Preparation Products And Raw materials

Raw materials

Preparation Products

3-Methyl-2-butanethiol Suppliers

Global( 85)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21910 58
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114 CHINA 6374 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20094 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
021-67121385 China 24560 81
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44046 61
Secco work (Beijing) chemical technology co., LTD 010-69755668;
010-69755668 China 3569 54
Adamas Reagent, Ltd. 400-600-9262 China 13922 59

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