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Product FOB Price Min.Order Supply Ability Supplier
Cas No: 123-51-3
No Data 1 Gram 50 Metric Ton/Month Hangzhou Zhongqichem Co.,Ltd. Contact Supplier
Top purity 3-Methyl-1-butanol with high quality and best price cas:123-51-3
Cas No: 123-51-3
USD $ 3.0-10.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
3-Methyl-1-butanol CAS #123-51-3
Cas No: 123-51-3
No Data 180 Kilogram 10000 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
3-Methyl-1-butanol, Isoamyl alcohol, Isopentyl alcohol
Cas No: 123-51-3
No Data 1 Metric Ton Metric Ton/Day Nanjing Yuance Industry&Trade Co., Ltd. Contact Supplier
High purity 3-Methyl-1-butanol CAS 123-51-3 with factory price
Cas No: 123-51-3
USD $ 3.0-5.0 / Kilogram 170 Kilogram 200 Metric Ton/Month Wuhan Fortuna Chemical Co.,Ltd Contact Supplier
High quality Isoamyl Alcohol supplier in China
Cas No: 123-51-3
No Data No Data No Data Simagchem Corporation Contact Supplier
Isoamyl alcohol
Cas No: 123-51-3
No Data No Data No Data Chemwill Asia Co., Ltd. Contact Supplier
3-Methyl-1-butanol CAS. 123-51-3
Cas No: 123-51-3
No Data 1 Kilogram 1000 Metric Ton/Week Crovell Biotech (Hebei) Co., Ltd. Contact Supplier
Cas No: 123-51-3
USD $ 1.0-2.0 / Metric Ton 1 Metric Ton 500 Metric Ton/Week Hebei yanxi chemical co.,LTD. Contact Supplier
Cas No: 123-51-3
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier

123-51-3 Usage


(1) Used as food flavors according to GB 2760-96. Mainly used for the preparation of apple and banana flavor.
(2) Used as chromatographic reagent and extractant, and also used in the pharmaceutical industry
(3) Used in the manufacture of spices, pharmaceuticals and mineral processing agents, and also used as solvents
(4) This goods have apple brandy aroma and spicy flavor. China's GB 2760-86 provides for its allowable use as food spices, mainly for the preparation of apple and banana flavor. Isoamyl alcohol and sodium nitrite can perform esterification to form isoamyl nitrite, which is the fastest nitrous esters short-acting vasodilator. Isoamyl alcohol can be used to synthesize sedatives and hypnotics, such as bromural and amytal. Isoamyl alcohol can also be used as solvents and the reagents for chemical analysis. It is also used as the raw materials to produce plasticizers and photographic pharmaceutical. In addition, it is one component of the fuel oil.
(5) Used for the manufacture of spices, pharmaceuticals and photographic drugs, and also used as solvents.
(6) Used as the solvents of fat, resin and alkaloid. Used for the determination of fat in milk and the determination of iron, silicon, thorium and fusel oil. Also used for the complexation extraction of iron, cobalt, copper salt and diphenylcarbazide. Used for the separation of lithium Chloride from other alkali metal chlorides.


Isoamylol is one of the several isomers of amyl alcohol and the main ingredient in the production of banana oil.

Chemical properties

Colorless to pale yellow clear oily liquid. Apple brandy aroma and spicy flavor. Melting point:-117.2 °C. Boiling point: 130 °C. Relative density (d2525): 0.813. Refractive index (nD20): 1.4075. Vapors are toxic. Miscible in ethanol and ether. Slightly soluble in water.
Natural products present in the form of esters in strawberries, peppermint, lemongrass, eucalyptus oil and rum and so on.

Reactivity Profile

3-Methyl-1-butanol attacks plastics [Handling Chemicals Safely, 1980. p. 236]. Mixtures with concentrated sulfuric acid and strong hydrogen peroxide may cause explosions. Mixing with hypochlorous acid in water or water/carbon tetrachloride solution can generate isoamyl hypochlorites, which may explode, particularly on exposure to sunlight or heat. Mixing with chlorine would also yield isoamyl hypochlorites [NFPA 491 M, 1991]. Base-catalysed reactions with isocyanates can occur with explosive violence [Wischmeyer,1969].

Health Hazard

Very high vapor concentrations irritate eyes and upper respiratory tract. Continued contact with skin may cause irritation.

Purification Methods

Dry the alcohol by heating with CaO and fractionally distilling, then heating with BaO and redistilling. Alternatively, boil it with concentrated KOH solution, wash it with dilute H3PO4, and dry it with K2CO3, then anhydrous CuSO4, before fractionally distilling it. If very dry alcohol is required, the distillate is refluxed with the appropriate alkyl phthalate or succinate as described for ethanol. It is separated from 2-methyl-1-butanol by fractional distillation, fractional crystallisation and preparative gas chromatography. [Beilstein 1 IV 1677.]


ChEBI: An alkyl alcohol that is butan-1-ol substituted by a methyl group at position 3.

Hazards & Safety Information

Category     Flammable liquids
Toxic classification   moderate toxic
Acute Toxicity   Oral-rat LD50: 1300 mg/kg; celiac-mouse LD50: 233 mg/kg
Stimulation Data   Skin-Rabbit 20mg/24hours Moderate; Eye-Rabbit 20mg/24hours Moderate
Explosives hazardous characteristics   Mix with air to be explosive
Flammability hazard characteristics   In case of fire, high temperature and oxidant flammable; combustion to release excitive smoke
Storage and transportation characteristics   Ventilation; Low temperature; dry; Separate storage with oxidizing agent
Extinguishing agent  dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent
Occupational Standard  TLV-TWA 100 PPM (360 mg /m3); STEL 125 PPM (450 mg/m3)

Air & Water Reactions

Highly flammable. Water soluble.

content analysis

determined through non-polar column method of gas chromatography(GT-10-4).
Toxicity  GRAS (FEMA).
Use limits
FEMA (mg/kg): soft drinks 17; cold drinks 7.6; candy 52; baked goods 24; pudding 46; gum 300; alcohol 100. Modest limit (FDA § 172.515, 2000).


Solvent for fats, resins, alkaloids, etc.; manufacture of isoamyl (amyl) Compounds, isovaleric acid, mercury fulminate, pyroxylin, artificial silk, lacquers, smokeless powders; in microscopy; for dehydrating celloidin solutions; for determining fat in milk.

Chemical Properties

colourless liquid

General Description

Colorless liquid with a mild, choking alcohol odor. Less dense than water, soluble in water. Hence floats on water. Produces an irritating vapor.

Production methods

(1) This product naturally presents in the form of esters in strawberries, peppermint, lemongrass, eucalyptus oil and rum and so on. It can be synthesized by acid method or the hydroformylation of C4 alkenes. 3-methyl-1-butanol (85% in the fusel oil) can be obtained by chemical treatment and distillation separation of the fusel oil that is the side products form the alcohol fermentation of starch and sugar.
(2) Derived from fusel oil fractionation.
Pentane performs chlorination and hydrolysis reaction to form mixed alcohol, and then isoamyl alcohol can be derived from the mixed alcohol.

123-51-3 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1424153)  3-Methyl-1-butanol  United States Pharmacopeia (USP) Reference Standard 123-51-3 1424153-3X1.2ML 4,662.45CNY Detail
Sigma-Aldrich (59090)  3-Methylbutanol  puriss. p.a., ACS reagent, ≥98.5% (GC) 123-51-3 59090-1L 1,450.80CNY Detail
Sigma-Aldrich (59090)  3-Methylbutanol  puriss. p.a., ACS reagent, ≥98.5% (GC) 123-51-3 59090-250ML 498.42CNY Detail
Sigma-Aldrich (320021)  3-Methyl-1-butanol  ACS reagent, ≥98.5% 123-51-3 320021-2.5L 2,313.09CNY Detail
Sigma-Aldrich (320021)  3-Methyl-1-butanol  ACS reagent, ≥98.5% 123-51-3 320021-1L 1,432.08CNY Detail
Sigma-Aldrich (320021)  3-Methyl-1-butanol  ACS reagent, ≥98.5% 123-51-3 320021-500ML 1,005.03CNY Detail
Sigma-Aldrich (M32658)  3-Methyl-1-butanol  reagent grade, 98% 123-51-3 M32658-2.5L 2,187.90CNY Detail
Sigma-Aldrich (M32658)  3-Methyl-1-butanol  reagent grade, 98% 123-51-3 M32658-1L 1,168.83CNY Detail
Sigma-Aldrich (M32658)  3-Methyl-1-butanol  reagent grade, 98% 123-51-3 M32658-500ML 884.52CNY Detail
Sigma-Aldrich (M32658)  3-Methyl-1-butanol  reagent grade, 98% 123-51-3 M32658-100ML 525.33CNY Detail
Sigma-Aldrich (309435)  3-Methyl-1-butanol  anhydrous, ≥99% 123-51-3 309435-1L 1,612.26CNY Detail
Sigma-Aldrich (309435)  3-Methyl-1-butanol  anhydrous, ≥99% 123-51-3 309435-100ML 771.03CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name isoamylol

1.2 Other means of identification

Product number -
Other names 3-Methyl-1-butanol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives -> Flavoring Agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:123-51-3 SDS

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