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2-Butyn-1-ol

2-Butyn-1-ol structure

CAS No.: 764-01-2

Chemical Name:: 2-Butyn-1-ol

Synonyms: But-2-yn-1-ol;2-Butynol;1-Hydroxybut-2-yne;ZZ-9;2-butyn-1-0l;2-BUTYN-1-OL;BUT-2-IN-1-OL;2-BUTYNE-1-OL;CH3CequivCCH2OH;2-Butyn-1-ol,98%

CBNumber:: CB8467261

Molecular Formula:: C4H6O

Molecular Weight:: 70.09

MDL Number:: MFCD00002914

MOL File:: 764-01-2.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 03:43:14

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2-Butyn-1-ol Properties

Melting point	-2.2 °C (lit.)
Boiling point	142-143 °C (lit.)
Density	0.937 g/mL at 25 °C (lit.)
refractive index	n20/D 1.453(lit.)
Flash point	125 °F
storage temp.	Refrigerator
solubility	Miscible with chloroform and methanol.
form	Liquid
pka	13.14±0.10(Predicted)
Specific Gravity	0.937
color	Clear colorless to light yellow
BRN	1733676
Stability	Stable. Flammable.
InChI	1S/C4H6O/c1-2-3-4-5/h5H,4H2,1H3
InChIKey	NEEDEQSZOUAJMU-UHFFFAOYSA-N
SMILES	CC#CCO
CAS DataBase Reference	764-01-2(CAS DataBase Reference)
FDA UNII	US5293942K
NIST Chemistry Reference	2-Butyn-1-ol(764-01-2)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07

Signal word

Warning

Hazard statements

H226-H315-H319-H335

Precautionary statements

P210-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Hazard Codes

Xi,F

Risk Statements

10-43-52/53-36/37/38

Safety Statements

36/37-26-16

RIDADR

UN 1987 3/PG 3

WGK Germany

Hazard Note

Irritant

HazardClass

PackingGroup

III

HS Code

29052990

Storage Class

3 - Flammable liquids

Hazard Classifications

Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2
STOT SE 3

NFPA 704

	2
2		0

2-Butyn-1-ol price More Price(66)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	244341	2-Butyn-1-ol 98%	764-01-2	5g	$76.2	2026-04-30	Buy
Sigma-Aldrich	244341	2-Butyn-1-ol 98%	764-01-2	25g	$169	2026-04-30	Buy
TCI Chemical	B0712	2-Butyn-1-ol >98.0%(GC)	764-01-2	5mL	$27	2026-04-30	Buy
TCI Chemical	B0712	2-Butyn-1-ol >98.0%(GC)	764-01-2	25mL	$99	2026-04-30	Buy
Usbiological	261673	2-Butyne-1-ol Asreported	764-01-2	5g	$333	2026-06-03	Buy

Product number	Packaging	Price	Buy
244341	5g	$76.2	Buy
244341	25g	$169	Buy
B0712	5mL	$27	Buy
B0712	25mL	$99	Buy
261673	5g	$333	Buy

2-Butyn-1-ol Chemical Properties, Uses, Production

Synthesis

P-Toluenesulfonic acid (3.30 g, 17.4 mmol, 0.1 equivalence) was added to a THP-protected solution of 2-butyn-1-ol (174 mmol) in methanol (solvent grade, 139 ml), and the reaction mixture was stirred overnight. Potassium carbonate (2.40 g, 17.4 mmol, 0.1 equivalence) was added to the reaction mixture, and the resulting suspension was stirred for 30 minutes. The solids were removed by filtration, and the solvent was evaporated under reduced pressure. The residue was purified by distillation (76 mbar, oil bath temperature 120 °C) to obtain the target product.

Synthetic Route of 2-Butyn-1-ol

Chemical Properties

liquid

Uses

2-Butyn-1-ol is used in the synthesis of homocoupling products. It is also used to inhibit corrosion of iron in acidic solution.

2-Butyn-1-ol Preparation Products And Raw materials

Raw materials

Preparation Products

Benzene, 4-1-(2-butynyloxy)ethyl-1,2-dimethoxy- 1-amino-2-butyne hydrochloride 5-(but-2-ynyloxy)pyrazine-2-carboxylic acid (E)-3-Iodo-2-buten-1-ol

2-Butyn-1-ol Suppliers

Global Suppliers ( 293)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40202	62
New Energy Chemicals	0515-82159099 13770142076	info@njuchem.com	China	182	65
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
TCI (Shanghai) Development Co., Ltd.	021-67121386	Sales-CN@TCIchemicals.com	China	24512	81
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	45000	61
Wuhan Chemwish Technology Co., Ltd	86-027-67849912	sales@chemwish.com	China	35884	56
Capot Chemical Co., Ltd	+86 (0) 571 85 58 67 18		China	18187	66
Beijing Ouhe Technology Co., Ltd	13552068683 13522913783	2355560935@qq.com	China	11777	60
JinYan Chemicals(ShangHai) Co.,Ltd.	13817811078	sales@jingyan-chemical.com	China	9963	60

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
New Energy Chemicals	65
Alfa Aesar	84
TCI (Shanghai) Development Co., Ltd.	81
Energy Chemical	61
Wuhan Chemwish Technology Co., Ltd	56
Capot Chemical Co., Ltd	66
Beijing Ouhe Technology Co., Ltd	60
JinYan Chemicals(ShangHai) Co.,Ltd.	60

View Latest Price from 2-Butyn-1-ol manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-04-04	2-Butyn-1-ol 764-01-2		25KG	97%	1ton	Henan Aochuang Chemical Co.,Ltd.
2021-07-13	2-Butyn-1-ol 764-01-2	$10.00-15.00	1KG	99%+ HPLC		Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10	2-Butyn-1-ol 764-01-2	$10.00-15.00	1KG	99%+ HPLC		Zhuozhou Wenxi import and Export Co., Ltd

2-Butyn-1-ol
764-01-2
$0.00
97%
Henan Aochuang Chemical Co.,Ltd.

2-Butyn-1-ol
764-01-2
$10.00-15.00
99%+ HPLC
Zhuozhou Wenxi import and Export Co., Ltd

2-Butyn-1-ol
764-01-2
$10.00-15.00
99%+ HPLC
Zhuozhou Wenxi import and Export Co., Ltd

2-Butyn-1-ol Spectrum

2-Butyn-1-ol(764-01-2)MS 2-Butyn-1-ol(764-01-2)¹HNMR 2-Butyn-1-ol(764-01-2)¹³CNMR 2-Butyn-1-ol(764-01-2)IR1 2-Butyn-1-ol(764-01-2)IR2 2-Butyn-1-ol(764-01-2)Raman

764-01-2 (2-Butyn-1-ol) Related Search:

Ethinyl Estradiol 2-Butyne 3-Methyl butynol Acetylenedicarboxylic acid monopotassium salt 2,5-Dimethyl-3-hexyne-2,5-diol

1,4-Bis(2-hydroxyethoxy)-2-butyne Phenylpropiolic acid 3-Hexyn-2,5-diol 2-Butyne-1,4-diol Diethyl acetylenedicarboxylate

3-Butyn-1-ol Propargyl alcohol Methyl 2-nonynoate Ethyl phenylpropiolate 3,6-Dimethyl-4-octyn-3,6-diol

2-Octynoic acid Methyl 2-butynoate Acetylenedicarboxylic acid

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2-butyn-1-0l 2-Butynyl alcohol BUT-2-IN-1-OL HYDROXYMETHYLMETHYLACETYLENE 2-BUTYN-1-OL 99% 1-hydroxy-2-butyne 2-BUTYNE-1-OL 2-BUTYN-1-OL 2-Butyne-1-ol, 98+% CH3CequivCCH2OH 2-Butyn-1-ol,98% 1-(Hydroxymethyl)-2-methylacetylene 2-Butyne-1-ol for synthesis 1-Hydroxybut-2-yne 2-Butyne, 1-broMo- 2-Butyn-1-ol, 98% 25ML 2-Butyn-1-ol, 98% 5ML 2-BUTYN-1-OL, 98%2-BUTYN-1-OL, 98%2-BUTYN-1-OL, 98% 2-Butyn-1-ol > 2-Butyn-1-ol (7CI, 8CI, 9CI, ACI) 2-Butyn-1-ol-Minimum Order 10kg Linagliptin Impurity 133 ZZ-9 2-Butynol But-2-yn-1-ol 764-01-2 746-01-2 9764-04-2 734-01-2 CH3CCCH2OH CH3C8801CCH2OH C4H6O Building Blocks Alkynes Acetylenic Alcohols & Their Derivatives Acetylenes Internal Organic Building Blocks Acetylenes Acetylenic Alcohols & Their Derivatives Alkynes Internal Organic Building Blocks