Isobutyryl chloride #CAS79-30-1
CAS Number:79-30-1
Chemical Formula:C4H7ClO
Synonyms:
ISOBUTANOYLCHLORIDE
2-METHYLPROPIONYL CHLORIDE
ALPHA-METHYL PROPIONYL CHLORIDE
Appearance:Clear Liquid
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Isobutyryl chloride #CAS79-30-1
Isobutyryl chloride is used in the preparation of fully isobutyramide terminated hyperbranched polyethylenimines. It plays an important role in the separation and identification of shikonin and its ester derivatives in the root epidermis of Echium italicum L. It acts as an acylating agent for the ketimine derivatives of alfa-amino esters, nucleosides and pyrroles. Further, it is used in the preparation of organic peroxides. In addition to this, it is used as an intermediate for dyes, textile auxiliaries and peroxide compounds.
Isobutyryl chloride is a colorless liquid. Melting point -90℃, boiling point 92℃, relative density 1.0174 (20/4℃), refractive index 1.4079, flash point 1℃. It is soluble in ether, but decomposes in water and alcohol.
Application of Isobutyryl chloride #CAS79-30-1
Isobutyryl chloride is used as an intermediate in organic synthesis and is a raw material for the production of highly efficient photoinitiators PI-906 and PI-907.
It is obtained by reacting isobutyric acid with thionyl chloride: Isobutyric acid is added dropwise to thionyl chloride under stirring, and the reaction immediately releases hydrogen chloride and sulfur dioxide. After the addition is complete, stirring continues, and the temperature is raised to 80℃ and maintained for 0.5 hours. Distillation is performed, collecting the broad fraction, and then distilling again to collect the fraction at 92-92℃ to obtain the final product.
Isobutyryl chloride is a flammable and irritating hazardous chemical. Its vapors are highly irritating to the respiratory tract, eyes, and skin; contact requires the wearing of protective clothing, goggles, and gloves. It must be stored in a cool, dry, well-ventilated dedicated hazardous materials warehouse in a sealed container, strictly protected from moisture.
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| Isobutyryl chloride Chemical Properties |
| Melting point | -90 °C (lit.) |
| Boiling point | 91-93 °C (lit.) |
| density | 1.017 g/mL at 25 °C (lit.) |
| vapor pressure | 0.07 mm Hg ( 20 °C) |
| refractive index | n |
| Fp | 34 °F |
| storage temp. | Store below +30°C. |
| solubility | Miscible with chloroform, glacial acetic acid, ether, toluene, methylene chloride and benzene. |
| form | Liquid |
| color | Clear |
| PH | <7 (H2O) |
| Odor | Stench |
| explosive limit | 2.1-8.2%(V) |
| Water Solubility | Reacts |
| Sensitive | Moisture Sensitive |
| BRN | 605393 |
| InChI | 1S/C4H7ClO/c1-3(2)4(5)6/h3H,1-2H3 |
| InChIKey | DGMOBVGABMBZSB-UHFFFAOYSA-N |
| SMILES | CC(C)C(Cl)=O |
| CAS DataBase Reference | 79-30-1(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Methylpropanoyl chloride(79-30-1) |
| EPA Substance Registry System | Propanoyl chloride, 2-methyl- (79-30-1) |
| Safety Information |
| Hazard Codes | F,C,T |
| Risk Statements | 11-35-23 |
| Safety Statements | 16-23-26-36-45-36/37/39-28A |
| RIDADR | UN 2395 |
| WGK Germany | 1 |
| RTECS | UC3944000 |
| F | 13 |
| Autoignition Temperature | 325 °C |
| Hazard Note | Highly Flammable/Corrosive/Moisture Sensitive |
| TSCA | TSCA listed |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29147090 |
| HS Code | 29159080 |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Flam. Liq. 2 Skin Corr. 1A |
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