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ChemicalBook >> CAS DataBase List >> Acetylenedicarboxylic acid

Acetylenedicarboxylic acid

Acetylenedicarboxylic acid price.
  • $5 - $20300
  • Product name: Acetylenedicarboxylic acid
  • CAS: 142-45-0
  • MF: C4H2O4
  • MW: 114.06
  • EINECS:205-536-0
  • MDL Number:MFCD00004362
  • Synonyms:ACETYLENEDICARBOXYLIC ACID FREE ACID;BUTYNEDIOIC ACID ACETYLENE DICARBOXYLIC ACID 99%;Acetylenedicarboxylic acid,98%;Acetylen-dicarbonsαure;NSC-1903;NSC-631597;Acetylenedicarboxylic acid,99%;Acetylenedicarboxylic acid 1g [142-45-0]
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging1g
  • Price$5
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging5g
  • Price$7
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging10g
  • Price$12
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging25g
  • Price$21
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging100g
  • Price$66
  • Updated2026-05-28
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  • Manufactureraablocks
  • Product numberAA003NL3
  • Product description2-Butynedioic acid 98%
  • Packaging50g
  • Price$37
  • Updated2026-05-28
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  • ManufacturerAHH
  • Product numberMT-04274
  • Product description2-Butynedioic acid 97%
  • Packaging250g
  • Price$295
  • Updated2026-05-26
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  • ManufacturerAK Scientific
  • Product numberA028
  • Product descriptionAcetylenedicarboxylic acid 98%(GC)
  • Packaging25g
  • Price$247
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberA028
  • Product descriptionAcetylenedicarboxylic acid 98%(GC)
  • Packaging1g
  • Price$40
  • Updated2026-06-04
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  • ManufacturerAK Scientific
  • Product numberA028
  • Product descriptionAcetylenedicarboxylic acid 98%(GC)
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  • Price$95
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  • ManufacturerAK Scientific
  • Product numberA028
  • Product descriptionAcetylenedicarboxylic acid 98%(GC)
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  • Price$741
  • Updated2026-06-04
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  • ManufacturerAmbeed
  • Product numberA151533
  • Product descriptionAcetylenedicarboxylic Acid 98%
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  • Price$10
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA151533
  • Product descriptionAcetylenedicarboxylic Acid 98%
  • Packaging25g
  • Price$29
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0028288
  • Product descriptionACETYLENE DICARBOXYLIC ACID 95.00%
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  • Price$819.95
  • Updated2021-12-16
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  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0028288
  • Product descriptionACETYLENE DICARBOXYLIC ACID 95.00%
  • Packaging25G
  • Price$1190.79
  • Updated2021-12-16
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  • ManufacturerArctom
  • Product numberBD-A151533
  • Product descriptionAcetylenedicarboxylic Acid 98%
  • Packaging25g
  • Price$26
  • Updated2026-05-26
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Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003NL3 2-Butynedioic acid 98% 1g $5 2026-05-28 Buy
aablocks AA003NL3 2-Butynedioic acid 98% 5g $7 2026-05-28 Buy
aablocks AA003NL3 2-Butynedioic acid 98% 10g $12 2026-05-28 Buy
aablocks AA003NL3 2-Butynedioic acid 98% 25g $21 2026-05-28 Buy
aablocks AA003NL3 2-Butynedioic acid 98% 100g $66 2026-05-28 Buy
aablocks AA003NL3 2-Butynedioic acid 98% 50g $37 2026-05-28 Buy
AHH MT-04274 2-Butynedioic acid 97% 250g $295 2026-05-26 Buy
AK Scientific A028 Acetylenedicarboxylic acid 98%(GC) 25g $247 2026-06-04 Buy
AK Scientific A028 Acetylenedicarboxylic acid 98%(GC) 1g $40 2026-06-04 Buy
AK Scientific A028 Acetylenedicarboxylic acid 98%(GC) 5g $95 2026-06-04 Buy
AK Scientific A028 Acetylenedicarboxylic acid 98%(GC) 100g $741 2026-06-04 Buy
Ambeed A151533 Acetylenedicarboxylic Acid 98% 5g $10 2021-12-16 Buy
Ambeed A151533 Acetylenedicarboxylic Acid 98% 25g $29 2021-12-16 Buy
American Custom Chemicals Corporation CHM0028288 ACETYLENE DICARBOXYLIC ACID 95.00% 5G $819.95 2021-12-16 Buy
American Custom Chemicals Corporation CHM0028288 ACETYLENE DICARBOXYLIC ACID 95.00% 25G $1190.79 2021-12-16 Buy
Arctom BD-A151533 Acetylenedicarboxylic Acid 98% 25g $26 2026-05-26 Buy
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Properties

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
InChI :1S/C4H2O4/c5-3(6)1-2-4(7)8/h(H,5,6)(H,7,8)
InChIKey :YTIVTFGABIZHHX-UHFFFAOYSA-N
SMILES :OC(=O)C#CC(O)=O
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)

Safety Information

Symbol(GHS): Skull and Crossbones (GHS06)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

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.

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Suppliers and manufacturers

Jinan Daen Pharmaceutical Technology Co., Ltd Jinan Daen Pharma Tech Co., Ltd. J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. INTATRADE GmbH 3B Pharmachem (Wuhan) International Co.,Ltd. Alfa Aesar TCI (Shanghai) Development Co., Ltd. Beijing HwrkChemical Technology Co., Ltd Energy Chemical