ChemicalBook >> CAS DataBase List >>2-Butynoic acid

2-Butynoic acid

2-Butynoic acid structure

CAS No.: 590-93-2

Chemical Name:: 2-Butynoic acid

Synonyms: BUT-2-YNOIC ACID;TETROLIC ACID;Butynoic acid;2-Butynoic;2-Butyl acid;2-BUTYNOIC ACID;2- butynic acid;2-Butynolc acid;2-Butynoate acid;2-Butynoicacid,98%

CBNumber:: CB6194374

Molecular Formula:: C4H4O2

Molecular Weight:: 84.07

MDL Number:: MFCD00004363

MOL File:: 590-93-2.mol

MSDS File:: SDS

Last updated:2026-06-04 16:00:12

Product description	Number	Pack Size	Price
2-Butynoic acid 98%	303666	1g	$59.7
2-Butynoic acid 98%	303666	5g	$150
Tetrolic Acid >98.0%(GC)(T)	T1199	1g	$32
Tetrolic Acid >98.0%(GC)(T)	T1199	5g	$96
2-Butynoic Acid	TRC-B809725-5G	5g	$212
More product size

Request For Quotation

2-Butynoic acid Properties

Melting point	78-80 °C (lit.)
Boiling point	200-203°C
Density	0,9641 g/cm³
refractive index	1.3918 (estimate)
Flash point	200-203°C
storage temp.	Sealed in dry,2-8°C
solubility	water: soluble50mg/mL, clear to very slightly hazy, colorless to very faintly yellow
form	Powder
pka	2.62(at 25℃)
color	White to yellow
Water Solubility	Soluble in water. Slightly soluble in methanol and chloroform.
BRN	1740205
InChI	1S/C4H4O2/c1-2-3-4(5)6/h1H3,(H,5,6)
InChIKey	LUEHNHVFDCZTGL-UHFFFAOYSA-N
SMILES	CC#CC(O)=O
CAS DataBase Reference	590-93-2(CAS DataBase Reference)
FDA UNII	W3AM9ANZ22
NIST Chemistry Reference	2-Butynoic acid(590-93-2)
EPA Substance Registry System	2-Butynoic acid (590-93-2)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS05

Signal word

Danger

Hazard statements

H314

Precautionary statements

P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363

PPE

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Hazard Codes

Risk Statements

34-20/21/22

Safety Statements

26-27-36/37/39-45

RIDADR

UN 3261 8/PG 2

WGK Germany

TSCA

TSCA listed

HazardClass

PackingGroup

HS Code

29161900

Storage Class

8A - Combustible corrosive hazardous materials

Hazard Classifications

Eye Dam. 1
Skin Corr. 1B

REACH Registrations

Active

Limited Quantities

1 Kg (2.2 lbs) (solid)

Excepted Quantities

Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

NFPA 704

	1
3		0

2-Butynoic acid price More Price(97)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	303666	2-Butynoic acid 98%	590-93-2	1g	$59.7	2026-04-30	Buy
Sigma-Aldrich	303666	2-Butynoic acid 98%	590-93-2	5g	$150	2026-04-30	Buy
TCI Chemical	T1199	Tetrolic Acid >98.0%(GC)(T)	590-93-2	1g	$32	2026-04-30	Buy
TCI Chemical	T1199	Tetrolic Acid >98.0%(GC)(T)	590-93-2	5g	$96	2026-04-30	Buy
TRC	TRC-B809725-5G	2-Butynoic Acid	590-93-2	5g	$212	2026-06-03	Buy

Product number	Packaging	Price	Buy
303666	1g	$59.7	Buy
303666	5g	$150	Buy
T1199	1g	$32	Buy
T1199	5g	$96	Buy
TRC-B809725-5G	5g	$212	Buy

2-Butynoic acid Chemical Properties,Uses,Production

Chemical Properties

white to yellow powder

Uses

Synthon employed in a variety of reactions, including cycloacylation of phenols to flavones and chromones,1 and cyclization to γ-butyrolactones.2

Uses

2-Butynoic acid is used as an intermediate in organic synthesis and pharmaceuticals. It is used as a synthon in various reactions, which includes cylcoalkylation of phenols to flavones and chromones. It is involved in the cyclization of gamma-butyrolactones. It is also used in the synthesis of Z-trisubstituted olefins through μ-alkylation. It plays an important role in the preparation of chirally pure 1,2,3,4-tetrahydroisoquinoline analogs, which finds application as anti-cancer agents.

Preparation

2-Butynic acid is synthesised from propyne and carbon dioxide.

General Description

The rotational spectrum of 2-butynoic acid was measured by pulsed supersonic-jet Fourier transform microwave spectroscopy.

2-Butynoic acid Preparation Products And Raw materials

Raw materials

Propyne Carbon dioxide

Preparation Products

Ethyl 2-butynoate 2,3-DIBROMOBUTYRIC ACID METHYL 2-BUTYNOATE

2-Butynoic acid Suppliers

Global( 353)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Rochi Pharmaceutical Co.,Ltd.	21-38751876 +8615000076078	info@rochipharma.com	China	505	58
Shanghai Scibiotron Pharmaceutical Co., Ltd	+86-16621589600	contact@scibiotron.com	China	5783	58
Hebei Chuanghai Biotechnology Co., Ltd	+86-15350571055	Sibel@chuanghaibio.com	China	8738	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-86-13131129325	sales1@chuanghaibio.com	China	5218	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20120	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29640	60
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	14025	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21585	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
Anqing Chico Pharmaceutical Co., Ltd.	15380796838	chloewu@chicopharm.cn	CHINA	340	58

Supplier	Advantage
Shanghai Rochi Pharmaceutical Co.,Ltd.	58
Shanghai Scibiotron Pharmaceutical Co., Ltd	58
Hebei Chuanghai Biotechnology Co., Ltd	58
Hebei Chuanghai Biotechnology Co,.LTD	58
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
ATK CHEMICAL COMPANY LIMITED	60
Anqing Chico Pharmaceutical Co., Ltd.	58

Synthesis and Thermal Stability of 2-Butynoic acid
As a versatile building block, 2-butynoic acid serves as an important synthetic intermediate and a foundational chemical mater....
Feb 2，2026

View Lastest Price from 2-Butynoic acid manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-07-09	2-Butynoic acid 590-93-2	$5.00	1KG	98%		Henan Fengda Chemical Co., Ltd
2026-06-30	2-Butynoic acid 590-93-2		1kg	99%	10000KGS	Shaanxi Dideu New Materials Co. Ltd
2026-05-28	2-Butynoic acid 590-93-2	$9.00	1KG	99.9	1 ton	Hebei Chuanghai Biotechnology Co,.LTD

2-Butynoic acid
590-93-2
$5.00
98%
Henan Fengda Chemical Co., Ltd

2-Butynoic acid
590-93-2
$0.00
99%
Shaanxi Dideu New Materials Co. Ltd

2-Butynoic acid
590-93-2
$9.00
99.9
Hebei Chuanghai Biotechnology Co,.LTD

2-Butynoic acid Spectrum

2-Butynoic acid(590-93-2)¹HNMR 2-Butynoic acid(590-93-2)Raman 2-Butynoic acid(590-93-2)FT-IR 2-Butynoic acid(590-93-2)IR

590-93-2(2-Butynoic acid)Related Search:

2-Butyne-1,4-diol Hyaluronic acid 2-Butyne Folic acid Ethyl 2-(Chlorosulfonyl)acetate

3-Methyl butynol Ketorolac tromethamine Ethyl propiolate Propiolic Acid Citric acid

Ascoric Acid Acetylenedicarboxylic acid PENTAACETYL-5-THIOGLUCOSE 2-OCTYNOIC ACID Phenylpropiolic acid

2-HEXYNOIC ACID ETHYL PHENYLPROPIOLATE Ethyl 2-butynoate

1of4

1-Propynecarboxylic acid 3-Methylpropiolic acid 2-BUTYNOIC ACID 2-Butynoicacid,98% 2-BUTYNOIC ACID 98% Methylacetylenecarboxylic acid Methylpropynoic acid Butynoic acid Methylpropiolic acid 2-Butynoic acid, 98% 1GR 2-Butynoic acid,Tetrolic acid 2-BUTYNOIC ACID, 98%2-BUTYNOIC ACID, 98%2-BUTYNOIC ACID, 98%2-BUTYNOIC ACID, 98% 2-Butynoic 2-Butynoate acid 2- butynic acid 2-Butyl acid 2-Butynoic acid (9CI, ACI) 2-Butynolc acid BUT-2-YNOIC ACID TETROLIC ACID 590-93-2 CH3C8801CCO2H CH3CCCOOH CH3CCCO2H C4H4O2 C4H3O2 Organic Building Blocks Building Blocks C1 to C5 Carbonyl Compounds Carboxylic Acids Acetylenic Carboxylic Acids & Their Derivatives Acetylenes API Organic Building Blocks Building Blocks C1 to C5 Carbonyl Compounds Carboxylic Acids Chemical Synthesis Acetylenes Acetylenic Carboxylic Acids & Their Derivatives

2-Butynoic acid

2-Butynoic acid Properties

SAFETY

Risk and Safety Statements

2-Butynoic acid price More Price(97)

2-Butynoic acid Chemical Properties,Uses,Production

Chemical Properties

Uses

Uses

Preparation

General Description

2-Butynoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

2-Butynoic acid Suppliers

Related articles

View Lastest Price from 2-Butynoic acid manufacturers

2-Butynoic acid Spectrum

590-93-2(2-Butynoic acid)Related Search: