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
Acetylenedicarboxylic acid Property
- Melting point:
- 180-187 °C (dec.) (lit.)
- Boiling point:
- 133.5°C (rough estimate)
- Density
- 1.1794 (rough estimate)
- refractive index
- 1.5260 (estimate)
- Flash point:
- 131 °C
- storage temp.
- 2-8°C
- solubility
- Methanol (Slightly), Water
- form
- Crystalline Powder or Crystals
- pka
- pK1: 1.75; pK2: 4.40 (25°C)
- 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
- 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
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.
N-Bromosuccinimide Price
- Product number
- A15207
- Product name
- Acetylenedicarboxylic acid
- Purity
- 95%
- Packaging
- 5g
- Price
- $75.9
- Updated
- 2024/03/01
- Product number
- A15207
- Product name
- Acetylenedicarboxylic acid
- Purity
- 95%
- Packaging
- 25g
- Price
- $216
- Updated
- 2024/03/01
- Product number
- A0088
- Product name
- Acetylenedicarboxylic Acid
- Purity
- >90.0%(HPLC)
- Packaging
- 5g
- Price
- $38
- Updated
- 2024/03/01
- Product number
- A0088
- Product name
- Acetylenedicarboxylic Acid
- Purity
- >90.0%(HPLC)
- Packaging
- 25g
- Price
- $152
- Updated
- 2024/03/01
- Product number
- A18736
- Product name
- Acetylenedicarboxylic acid, 97%
- Packaging
- 5g
- Price
- $29.65
- Updated
- 2024/03/01
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
Preparation Products
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View Lastest Price from Acetylenedicarboxylic acid manufacturers
- 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
- 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
- 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