Citraconic anhydride CAS 616-02-4
Product Name: Citraconic anhydride
CAS: 616-02-4
MF: C5H4O3
MW: 112.08
EINECS: 210-459-0
Density: 1.247 g/mL
Melting point: 6-10 °C
Boiling point: 213-214 °C
1. Citraconic anhydride is primarily used as a reversible reagent for temporarily blocking amine groups in proteins during biochemical research, as the bonds hydrolyze at acidic pH (3-4) to release the original free amines.
2. Citraconic anhydride serves as a key monomer in polymer production for specialty unsaturated polyester resins, adhesives, and coatings, enhancing properties such as flexibility and thermal stability.
3. Citraconic anhydride is used to reverse the effects of formalin fixation in tissue sections for antigen retrieval and to stabilize certain enzymes for improved catalytic performance.
Packed in 1kg/bottle, 25kg/drum, 50kg/drum.
1. Citraconic anhydride is a synthetic organic compound with CAS Registry Number 616-02-4, produced as the anhydride form of citraconic acid (methylmaleic acid).
2. Citraconic anhydride is manufactured industrially by chemical synthesis and can be purified by distillation in vacuum or refluxing with acetic anhydride to remove hydrolysis contaminants.
3. Citraconic anhydride is commercially available as a clear colorless to light yellow liquid from chemical suppliers for research and industrial use.
1. Citraconic anhydride is classified as dangerous with hazard statements H314 (causes severe skin burns and eye damage), H317 (may cause allergic skin reaction), and H334 (may cause allergy or asthma symptoms if inhaled).
2. Citraconic anhydride is toxic in contact with skin (H311), requires UN 2810 classification as a toxic liquid for transport, and has a WGK 3 water hazard classification.
3. When handling Citraconic anhydride, wear protective gloves, protective clothing, eye/face protection, use adequate ventilation, and avoid breathing dust/fume/gas/mist/vapours/spray.
1. Store Citraconic acid CAS 498-23-7 at room temperature in a cool, dark, dry place below 15°C (59°F) .
2. Store Citraconic acid under inert gas (such as nitrogen) and keep the container tightly closed, as Citraconic acid is hygroscopic and absorbs moisture from air .
3. For certified reference material standards, store Citraconic acid at -18±5°C (frozen) and protect from light and moisture .
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