- Product Details
Keywords
- Acetylenedicarboxylic acid
- 142-45-0
- 98% purity
Quick Details
- ProName: Acetylenedicarboxylic acid
- CasNo: 142-45-0
- Molecular Formula: C4H2O4
- Appearance: powder
- Application: intermediate
- DeliveryTime: in stock
- PackAge: according to the need pf packing
- Port: Shanghai Port
- ProductionCapacity: 100 Kilogram/Day
- Purity: 98% purity
- Storage: sealed in dry, room temperature
- Transportation: air,sea and courier
- LimitNum: 1 Gram
- Grade: Industrial Grade,Pharma Grade,Electron...
Superiority
Product Name: Acetylenedicarboxylic acid
Synonyms: 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
CAS: 142-45-0
MF: C4H2O4
MW: 114.06
EINECS: 205-536-0
Mol File: 142-45-0.mol
Details
Melting point 180-187 °C (dec.) (lit.)
Boiling point 133.5°C (rough estimate)
density 1.1794 (rough estimate)
refractive index 1.5260 (estimate)
Fp 131 °C
storage temp. 2-8°C
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)
Safety Information
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
MSDS Information
Provider Language
Acetylenedicarboxylic acid English
SigmaAldrich English
ACROS English
ALFA English
Acetylenedicarboxylic acid Usage And Synthesis
Chemical Properties cream coloured to beige crystalline powder or
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 meso-2,3-Dibromosuccinic acid-->(Z)-Bromofumaric acid-->cis-2-chloro-2-butenedioyl dichloride-->acetylene-bis-magnesium bromide, Fandachem-->Butanedioic acid, 2,2-dibromo--->bromomaleic acid-->2-Butyne-1,4-diol-->Vinyl bromide-->CARBON DIOXIDE-->SODIUM ACETYLIDE-->Calcium carbide
Preparation Products Dimercaptosuccinic acid-->Acetaldehyde-->4,4'-DIFLUORODIPHENYLACETYLENE-->DI-P-TOLYLACETYLENE-->DI-TERT-BUTYL ACETYLENEDICARBOXYLATE