ChemicalBook > CAS DataBase List > 2-Butynoic acid

2-Butynoic acid

Product Name: 2-Butynoic acid
CAS No.: 590-93-2
Chemical Name: 2-Butynoic acid
Synonyms: BUT-2-YNOIC ACID;Butynoic acid;TETROLIC 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
Formula Weight: 84.07
MOL File: 590-93-2.mol

Less

2-Butynoic acid Property

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
InChIKey: LUEHNHVFDCZTGL-UHFFFAOYSA-N
CAS DataBase Reference: 590-93-2(CAS DataBase Reference)
NIST Chemistry Reference: 2-Butynoic acid(590-93-2)
EPA Substance Registry System: 2-Butynoic acid (590-93-2)

Less

Safety

Hazard Codes: C
Risk Statements: 34-20/21/22
Safety Statements: 26-27-36/37/39-45
RIDADR: UN 3261 8/PG 2
WGK Germany: 3
TSCA: Yes
HazardClass: 8
PackingGroup: II
HS Code: 29161900

Less

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

Less

N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 303666
Product name: 2-Butynoic acid
Purity: 98%
Packaging: 1g
Price: $53.29
Updated: 2025/07/31

Sigma-Aldrich

Product number: 303666
Product name: 2-Butynoic acid
Purity: 98%
Packaging: 5g
Price: $133.95
Updated: 2025/07/31

TCI Chemical

Product number: T1199
Product name: Tetrolic Acid
Purity: >98.0%(GC)(T)
Packaging: 1g
Price: $38
Updated: 2025/07/31

TCI Chemical

Product number: T1199
Product name: Tetrolic Acid
Purity: >98.0%(GC)(T)
Packaging: 5g
Price: $113
Updated: 2025/07/31

TCI Chemical

Product number: T1199
Product name: Tetrolic Acid
Purity: >98.0%(GC)(T)
Packaging: 25g
Price: $455
Updated: 2025/07/31

Less

2-Butynoic acid Chemical Properties,Usage,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.

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

Preparation Products

Less

2-Butynoic acid Suppliers

Belgium 2 Canada 2 China 258 Germany 6 India 21 Japan 5 Jordan 1 Poland 1 Switzerland 2 United Kingdom 16 United States 39 Global 353

Shanghai Rochi Pharmaceutical Co., Ltd.

Tel: 021-38751876 15000076078
Fax: 021-50275764
Email: Info@rochipharma.com
Country: China
ProdList: 611
Advantage: 55

Shanghai Biobond Pharmaceutical Co.,Ltd.

Tel: 21-68719686 18917373795
Fax: 021-68719686
Email: sales@sh-biobond.cn
Country: China
ProdList: 83
Advantage: 58

Hangzhou Chemtrue Bio-Tech Co.,Ltd.

Tel: 0571-86828652 18857119830
Fax: 0571-83522824
Email: sales@chemtrue-bio.com
Country: China
ProdList: 252
Advantage: 58

Nanjing Gold Pharmaceutical Technology Co. Ltd.

Tel: 028-025-84209270 15380463325
Fax: 025-84209270
Email: wgp@nanjing-pharmaceutical.com
Country: China
ProdList: 88
Advantage: 55

Shanghai Ruiyi Pharmaceutical Technology Co., Ltd

Tel: 021-54711706 13585540855;
Email: sales5@ruiyitech.com
Country: China
ProdList: 192
Advantage: 58

Shanghai Toplab Chemical Co., Ltd.

Tel: 021-31137757-00; 18121466954
Fax: 021-64902762
Email: 28328681@qq.com
Country: China
ProdList: 180
Advantage: 55

Suzhou lipin Chemical Co., Ltd

Tel: 0512-67509664 19888480046
Email: 3516936381@qq.com
Country: China
ProdList: 98
Advantage: 58

Shanghai ChemIDo Co., Ltd.

Tel: 19301251526
Email: sales@chemido.com
Country: China
ProdList: 71
Advantage: 58

J & K SCIENTIFIC LTD.

Tel: 18210857532; 18210857532
Fax: 86-10-82849933
Email: jkinfo@jkchemical.com
Country: China
ProdList: 96815
Advantage: 76

Meryer (Shanghai) Chemical Technology Co., Ltd.

Tel: 4006356688 18621169109
Fax: 86-21-61259102
Email: market03@meryer.com
Country: China
ProdList: 40228
Advantage: 62

Alfa Aesar

Tel: 400-6106006
Fax: 021-67582001/03/05
Email: saleschina@alfa-asia.com
Country: China
ProdList: 30123
Advantage: 84

TCI (Shanghai) Development Co., Ltd.

Tel: 021-67121386
Fax: 021-67121385
Email: Sales-CN@TCIchemicals.com
Country: China
ProdList: 24529
Advantage: 81

Energy Chemical

Tel: 021-021-58432009 400-005-6266
Fax: 021-58436166
Email: sales8178@energy-chemical.com
Country: China
ProdList: 44801
Advantage: 61

Wuhan Chemwish Technology Co., Ltd

Tel: 86-027-67849912
Fax: 86-027-87531808
Email: sales@chemwish.com
Country: China
ProdList: 35896
Advantage: 56

Capot Chemical Co., Ltd

Tel: +86 (0) 571 85 58 67 18
Fax: 0086-571-85864795
Country: China
ProdList: 18207
Advantage: 66

Beijing Ouhe Technology Co., Ltd

Tel: 010-010-82967028 13522913783
Fax: +86-10-82967029
Email: 2355560935@qq.com
Country: China
ProdList: 12000
Advantage: 60

JinYan Chemicals(ShangHai) Co.,Ltd.

Tel: 13817811078
Fax: 86-021-50426522,50426273
Email: sales@jingyan-chemical.com
Country: China
ProdList: 9976
Advantage: 60

Shanghai Sinch Parmaceuticals Tech. Co. Ltd.

Tel: +86-21-54098501
Fax: +86-21-54096319
Email: sales@sinch.com.cn
Country: China
ProdList: 11598
Advantage: 64

Accela ChemBio Co.,Ltd.

Tel: 021-50795510 4000665055
Fax: 021-50795055
Email: sales@accelachem.com
Country: China
ProdList: 11035
Advantage: 64

Nanjing Chemlin Chemical Co., Ltd

Tel: 025-83697070
Fax: +86-25-83453306
Email: info@chemlin.com.cn
Country: China
ProdList: 16075
Advantage: 64

Shanghai Hanhong Scientific Co.,Ltd.

Tel: 021-54306202 13764082696
Email: info@hanhongsci.com
Country: China
ProdList: 42934
Advantage: 64

XiaoGan ShenYuan ChemPharm co,ltd

Tel: 15527768836
Email: 1791901229@qq.com
Country: China
ProdList: 6950
Advantage: 52

Sichuan Kulinan Technology Co., Ltd

Tel: 400-1166-196 18981987031
Fax: 028-84555506 800101999
Email: cdhxsj@163.com
Country: China
ProdList: 11705
Advantage: 57

China Langchem Inc.

Tel: 0086-21-58956006
Fax: 0086-21-58956100
Country: China
ProdList: 7811
Advantage: 57

Sinopharm Chemical Reagent Co,Ltd.

Tel: 86-21-63210123
Fax: 86-21-63290778 86-21-63218885
Email: sj_scrc@sinopharm.com
Country: China
ProdList: 9815
Advantage: 79

Nanjing Vital Chemical Co., Ltd.

Tel: Please Send Email 18652950785
Fax: 025-87193546
Email: chemweiao@163.com
Country: China
ProdList: 4378
Advantage: 65

Beijing Taiya Jie Technology Development Co., Ltd.

Tel: 021-33690831-8001 13552411790
Fax: 021-33690831
Email: postmaster@tyjchem.cn
Country: China
ProdList: 1542
Advantage: 55

Chengdu Ai Keda Chemical Technology Co., Ltd.

Tel: 4008-755-333 18080918076
Fax: 028-86757656
Email: 800078821@qq.com
Country: China
ProdList: 9718
Advantage: 55

Shanghai SynFarm Pharmaceutical Technology Co., Ltd.

Tel: 021-50793966 18917198199
Fax: +86-21-50793967
Email: info@synfarm.com
Country: China
ProdList: 280
Advantage: 58

Shanghai civi chemical technology co.,Ltd

Tel: 86-21-34053660
Fax: 86-21-34053661
Email: sale@labgogo.com
Country: China
ProdList: 9865
Advantage: 52

Thermo Fisher Scientific

Tel: 800-810-5118
Fax: +86-10-84193589
Email: cnchemical@thermofisher.com
Country: China
ProdList: 17770
Advantage: 75

Beijing innoChem Science & Technology Co.,Ltd.

Tel: 400-810-7969 010-59572699
Fax: 010-59572688
Email: ningzi.li@inno-chem.com.cn
Country: China
ProdList: 6134
Advantage: 55

Shanghai Topbiochem Technology Co., Ltd

Tel: +86-21-60341587
Fax: +86-21-61294319
Email: sales@topbiochem.com
Country: China
ProdList: 6175
Advantage: 58

Nanjing Norris-Pharm Technology Co., Ltd

Tel: 18652989687
Fax: +86-25-52131256
Email: sales@norris-pharm.com
Country: China
ProdList: 8878
Advantage: 55

Shanghai Jian Chao Chemical Technology Co., Ltd.

Tel: 150-2103-5486 18017383231
Fax: qq：2817624287
Email: 983544897@qq.com
Country: China
ProdList: 9342
Advantage: 55

SHANGHAI YINGRUI CHEMICAL TECHNOLOGY CO.,LTD.

Tel: 21-33585366 13311639313
Fax: +86-21-34979012
Email: sales@shyrchem.com
Country: China
ProdList: 806
Advantage: 55

9ding chemical ( Shanghai) Limited

Tel: 4009209199
Fax: 86-021-52271987
Email: sales@9dingchem.com
Country: China
ProdList: 22514
Advantage: 55

Shanghai Aladdin Bio-Chem Technology Co.,LTD

Tel: 400-6206333 13167063860
Fax: 021-50323701
Email: anhua.mao@aladdin-e.com
Country: China
ProdList: 25003
Advantage: 65

The future of Shanghai Industrial Co., Ltd.

Tel: 021-61552785
Fax: 021-55660885
Email: sales@shshiji.com
Country: China
ProdList: 9546
Advantage: 55

Chengdu AstaTech Trading Co., Ltd./AstaTech (Chengdu) Pharma. Co., Ltd.

Tel: +86-28-85122536 85324413
Fax: +86-28-85326443
Email: market@astatech.cn
Country: China
ProdList: 8026
Advantage: 55

Shanghai XIYU Chemical Technology Co.,Ltd.

Tel: 021-15000143735 15221126179
Fax: 021-38473230
Email: sala@xiyuchem.com
Country: China
ProdList: 374
Advantage: 55

Amatek Scientific Co. Ltd.

Tel: 0512-56316828 4008675858
Fax: +86-512-56316826
Email: sales@amateksci.com
Country: China
ProdList: 9874
Advantage: 55

Suzhou lipin Chemical Co., Ltd

Tel: 0512-0512-67509664 19888480046
Country: China
ProdList: 121
Advantage: 58

Bide Pharmatech Ltd.

Tel: 400-164-7117 13681763483
Fax: +86-21-61629029
Email: product02@bidepharm.com
Country: China
ProdList: 39966
Advantage: 60

ShangHai D&B Biological Science and Technology Co.Ltd

Tel: 400-008-9730,021-54359730 400-008-9730
Fax: 021-54353864
Email: info@chemxyz.com
Country: China
ProdList: 3057
Advantage: 60

Zhengzhou HongSheng Pharmaceutical Co., Ltd.

Tel: 0371-0371-13526885213 15637198702
Fax: 0371-63709726
Email: hsyykjchem@163.com
Country: China
ProdList: 3853
Advantage: 58

Chengdu HuaXia Chemical Reagent Co. Ltd

Tel: 400-1166-196 13458535857
Fax: QQ：800101999
Email: cdhxsj@163.com
Country: China
ProdList: 13350
Advantage: 58

Finetech Industry Limited

Tel: 027-87465837 19945049750
Fax: 027-8777-2287
Email: sales@finetechnology-ind.com
Country: China
ProdList: 9637
Advantage: 58

Hunan HuaTeng Pharmaceutical Co., Ltd.,

Tel: 400-8592883
Fax: 0731-82251112
Email: sales@huatengsci.com
Country: China
ProdList: 5872
Advantage: 58

Shanghai SE Pharm Co., Ltd

Tel: 18112588827
Email: sales4@sepharm.com.cn
Country: China
ProdList: 285
Advantage: 60

Less

View Lastest Price from 2-Butynoic acid manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: 2-Butynoic acid 590-93-2
Price: US $0.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 10000KGS
Release date: 2025-05-20

Hebei Chuanghai Biotechnology Co., Ltd

Product: 2-Butynoic acid 590-93-2
Price: US $1.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-15

Henan Aochuang Chemical Co.,Ltd.

Product: 2-Butynoic acid 590-93-2
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98%
Supply Ability: 1Ton
Release date: 2022-10-08

590-93-2, 2-Butynoic acidRelated 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-Butynoic acid ethyl ester~Ethyl tetrolate,2-BUTYNOIC ACID ETHYL ESTER 2-HEXYNOIC ACID ETHYL PHENYLPROPIOLATE

1-Propynecarboxylic acid

3-Methylpropiolic acid

2-BUTYNOIC ACID

BUT-2-YNOIC ACID

TETROLIC 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

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