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- Crotonic anhydride
-
-
2025-04-04
- CAS:623-68-7
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: 1Ton
- Crotonic anhydride
-
- $7.00
-
2019-07-06
- CAS: 623-68-7
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 100kg
|
| | Crotonic anhydride Basic information | | Uses |
| Product Name: | Crotonic anhydride | | Synonyms: | 2-Butenoicacid,anhydride;anhydridkyselinykrotonove;crotonicacidanhydride;CROTONIC ANHYDRIDE;2-butenoic anhydride;TRANS-2-BUTENOIC ANHYDRIDE;2-Butensureanhydrid;CROTONSAEUREANHYDRID | | CAS: | 623-68-7 | | MF: | C8H10O3 | | MW: | 154.17 | | EINECS: | 210-807-1 | | Product Categories: | Pharmaceutical Intermediates | | Mol File: | 623-68-7.mol |  |
| | Crotonic anhydride Chemical Properties |
| Melting point | -20°C | | Boiling point | 248 °C(lit.) | | density | 1.04 g/mL at 25 °C(lit.) | | vapor pressure | 1 hPa (25 °C) | | refractive index | n20/D 1.473(lit.) | | Fp | 231 °F | | storage temp. | Store below +30°C. | | solubility | soluble in Ether | | form | clear liquid | | color | Colorless to Light orange to Yellow | | InChI | 1S/C8H10O3/c1-3-5-7(9)11-8(10)6-4-2/h3-6H,1-2H3/b5-3+,6-4+ | | InChIKey | VJDDQSBNUHLBTD-GGWOSOGESA-N | | SMILES | O(C(=O)\C=C\C)C(=O)\C=C\C | | CAS DataBase Reference | 623-68-7(CAS DataBase Reference) | | EPA Substance Registry System | 2-Butenoic acid, anhydride (623-68-7) |
| Hazard Codes | C | | Risk Statements | 34 | | Safety Statements | 26-36/37/39-45 | | RIDADR | UN 3265 8/PG 3 | | WGK Germany | 3 | | RTECS | GQ6125000 | | Autoignition Temperature | 290 °C | | TSCA | TSCA listed | | HS Code | 2916 19 95 | | HazardClass | 8 | | PackingGroup | III | | Storage Class | 8A - Combustible, corrosive hazardous materials | | Hazard Classifications | Aquatic Acute 1
Eye Dam. 1
Skin Corr. 1B | | Hazardous Substances Data | 623-68-7(Hazardous Substances Data) | | Toxicity | LD50 orally in Rabbit: 2061 mg/kg |
| | Crotonic anhydride Usage And Synthesis |
| Uses | Crotonic anhydride belongs to the organic chemical intermediates, is an important organic chemical raw materials, in the dyestuff industry is used as fur dyes, reactive dyestuffs intermediates; in the cosmetic industry is used as a high-grade cosmetics, such as skin creams, hair conditioners, shampoos, creams, and other additives; in the pharmaceutical industry as a pharmaceutical antimicrobial drugs, sulfonamides as raw materials for drugs. Crotonic anhydride can also be used in the preparation of butenoic acid fiber and coal dye, hair dye, color developer, epoxy resin curing agent, petroleum additives, rubber antioxidants and other synthetic. | | Chemical Properties | Colorless to pale yellow liquid | | Uses | Crotonic anhydride is also known as 2-butenoic anhydride is commonly used as a precursor in the synthesis of polymers. Its reactive anhydride group makes it an effective acylating agent in esterification reactions, facilitating the formation of esters by reacting with alcohols. | | Synthesis Reference(s) | Tetrahedron Letters, 33, p. 593, 1992 DOI: 10.1016/S0040-4039(00)92318-9 | | Safety Profile | Moderately toxic by
ingestion. A skin irritant. When heated to
decomposition it emits acrid smoke and
irritating fumes. |
| | Crotonic anhydride Preparation Products And Raw materials |
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