ChemicalBook > CAS DataBase List > Acetylenedicarboxylic acid

Acetylenedicarboxylic acid

Product Name: Acetylenedicarboxylic acid
CAS No.: 142-45-0
Chemical Name: Acetylenedicarboxylic acid
Synonyms: But-2-ynedioic acid;2-BUTYNEDIOIC ACID;NSC-1903;NSC-631597;Butyne acid;2-Butynedioate;butynedioicaci;BUTYNEDIOIC ACID;Acetylen-dicarbonsαure;2-BUTYNE-1,4-DIOIC ACID
CBNumber: CB0334392
Molecular Formula: C4H2O4
Formula Weight: 114.06
MOL File: 142-45-0.mol

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Acetylenedicarboxylic acid Property

Melting point:: 180-187 °C (dec.) (lit.)
Boiling point:: 133.5°C (rough estimate)
Density: 1.1794 (rough estimate)
bulk density: 550kg/m3
refractive index: 1.5260 (estimate)
Flash point:: 131 °C
storage temp.: 2-8°C
solubility: Methanol (Slightly), Water
pka: pK1: 1.75; pK2: 4.40 (25°C)
form: Crystalline Powder or Crystals
color: White or cream to beige
Water Solubility: soluble
BRN: 878357
InChIKey: YTIVTFGABIZHHX-UHFFFAOYSA-N
CAS DataBase Reference: 142-45-0(CAS DataBase Reference)
NIST Chemistry Reference: 2-Butynedioic acid(142-45-0)
EPA Substance Registry System: 2-Butynedioic acid (142-45-0)

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Safety

Hazard Codes: T,Xi
Risk Statements: 25-36/37/38
Safety Statements: 26-45-37/39
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 3
TSCA: Yes
HazardClass: 6.1
PackingGroup: II
HS Code: 29171990

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: A15207
Product name: Acetylenedicarboxylic acid
Purity: 95%
Packaging: 5g
Price: $78.2
Updated: 2025/07/31

Sigma-Aldrich

Product number: A15207
Product name: Acetylenedicarboxylic acid
Purity: 95%
Packaging: 25g
Price: $223
Updated: 2025/07/31

TCI Chemical

Product number: A0088
Product name: Acetylenedicarboxylic Acid
Purity: >90.0%(HPLC)
Packaging: 5g
Price: $38
Updated: 2025/07/31

TCI Chemical

Product number: A0088
Product name: Acetylenedicarboxylic Acid
Purity: >90.0%(HPLC)
Packaging: 25g
Price: $152
Updated: 2025/07/31

TRC

Product number: A173870
Product name: Acetylenedicarboxylic Acid
Packaging: 100g
Price: $255
Updated: 2021/12/16

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Acetylenedicarboxylic acid Chemical Properties,Usage,Production

Chemical Properties

cream coloured to beige crystalline powder or

Uses

Acetylenedicarboxylic acid is employed in the preparation of dimethyl acetylenedicarboxylate and potassium hydrogenacetylenedicarboxylate. It is also used as a laboratory reagent. Further, it is used as a precursor in organic synthesis and also serves as a pharmaceutical intermediate.

Definition

ChEBI: An acetylenic compound that is acetylene in which the hydrogens are replaced by carboxy groups.

Purification Methods

The acid is soluble in Et2O and crystallises from Et2O/pet ether (m 183-183.5o), or H2O as the dihydrate which dehydrates in a desiccator over conc H2SO4 in a vacuum. The dipicrate crystallises from aqueous ether. For the mono K salt see entry in “Metal-organic Compounds”, Chapter 5. [Abbott et al. Org Synth Coll Vol II 10 1943, Huntress et al. Org Synth Coll Vol IV 329 1963, Beilstein 2 H 801, 2 I 317, 2 II 670, 2 III 1991, 2 IV 2290.]

Acetylenedicarboxylic acid Preparation Products And Raw materials

Raw materials

2,3-Dibromosuccinic acid

Preparation Products

Dimercaptosuccinic acid

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View Lastest Price from Acetylenedicarboxylic acid manufacturers

Hebei Fengjia New Material Co., Ltd

Product: Acetylenedicarboxylic acid 142-45-0
Price: US $3.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 10000
Release date: 2024-09-11

Hebei Chuanghai Biotechnology Co., Ltd

Product: Acetylenedicarboxylic acid 142-45-0
Price: US $1.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 10 mt
Release date: 2024-11-13

Shanghai UCHEM Inc.

Product: Acetaylenedicarboxylic Acid 142-45-0
Price: US $14.00-132.00/g
Min. Order: 5g
Purity: 0.98
Supply Ability: 25kg
Release date: 2023-12-11

142-45-0, Acetylenedicarboxylic acidRelated Search:

Ethyl 2-(Chlorosulfonyl)acetate Dimethyl acetylenedicarboxylate Malonic acid Diethyl acetylenedicarboxylic acid,ACETYLENEDICARBOXYLIC ACID DIETHYL ESTER Folic acid Stearic acid Hyaluronic acid TRIBUTYLSTANNYLACETYLENE 2-Ethynyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane Citric acid Ascoric Acid ACETYLENEDICARBOXYLIC ACID MONOPOTASSIU&,ACETYLENEDICARBOXYLIC ACID, MONOPOTASSIU M SALT, 98+%,ACETYLENEDICARBOXYLIC ACID MONOPOTASSIUM SALT PENTAACETYL-5-THIOGLUCOSE 2-Butyne BIS(TRIMETHYLSILYL)ACETYLENEDICARBOXYLATE BIS(TRI-N-BUTYLTIN)ACETYLENEDICARBOXYLATE Acetylenedicarboxylic acid di-tert-butyl ester,Acetylenedicarboxylic acid ditert-butyl ester Acetylenedicarboxylic acid diamide

ACETYLENEDICARBOXYLIC ACID FREE ACID

BUTYNEDIOIC ACID ACETYLENE DICARBOXYLIC ACID 99%

Acetylenedicarboxylic acid,98%

Acetylen-dicarbonsαure

But-2-ynedioic acid

2-Butynedioate

NSC-1903

NSC-631597

Acetylenedicarboxylic acid,99%

Acetylenedicarboxylic acid 1g [142-45-0]

Acetylenedicarboxylic acid,2-Butynedioic acid

Butyne acid

Acetylenedicarboxylic acid, 99% 25GR

Acetylenedicarboxylic acid, 97%, 97%

Acetylenedicarboxylic acid 95%

ACETYLENEDICARBOXYLIC ACID FOR SYNTHESIS

Acetyleoledicarboxylicacid

BUTYNEDIOIC ACID

2-BUTYNE-1,4-DIOIC ACID

2-BUTYNEDIOIC ACID

ACETYLENEDICARBOXYLIC ACID

Acetaylenedicarboxylic Acid

Acetylenedicarboxylic Acid &gt

butynedioicaci

Acetylenedicarboxylic acid,142-45-0

2-Butyne-1,4-dioic acid,97% ,142-45-0

142-45-0

HOOCCCCOOH

HO2CCCCO2H

HOOCC8801CCOOH

Acetylenes

Acetylenic Carboxylic Acids & Their Derivatives

Organic Building Blocks

Building Blocks

Carboxylic Acids

Carbonyl Compounds

C1 to C5

Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts

Acetylenic Carboxylic Acids & Their Derivatives

Acetylenes

Pharmaceutical Intermediates