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- Butyryl Chloride
-
- $10.00
-
2026-03-20
- CAS:141-75-3
- Min. Order: 1kg
- Purity: 99.5%
- Supply Ability: 100 TON
- Butyryl chloride
-
-
2025-12-25
- CAS:141-75-3
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 500000kg
- Butyryl chloride
-
-
2025-08-20
- CAS:141-75-3
- Min. Order: 1kg
- Purity: 99.99%
- Supply Ability: 20 tons
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| | Butyryl chloride Basic information |
| | Butyryl chloride Chemical Properties |
| Melting point | −89 °C(lit.) | | Boiling point | 102 °C(lit.) | | density | 1.026 g/mL at 25 °C(lit.) | | vapor density | 3.7 (vs air) | | vapor pressure | 39 hPa (20 °C) | | refractive index | n20/D 1.412(lit.) | | RTECS | EM0595000 | | Fp | 71 °F | | storage temp. | Store below +30°C. | | solubility | Miscible with ether. | | form | Liquid | | color | Clear slightly yellow | | Odor | pungent odor | | explosive limit | 2.5-7.3%(V) | | Water Solubility | decomposes | | FreezingPoint | -89℃ | | Sensitive | Moisture Sensitive | | Merck | 14,1598 | | BRN | 605395 | | InChI | 1S/C4H7ClO/c1-2-3-4(5)6/h2-3H2,1H3 | | InChIKey | DVECBJCOGJRVPX-UHFFFAOYSA-N | | SMILES | CCCC(Cl)=O | | LogP | 0.51 at 25℃ | | CAS DataBase Reference | 141-75-3(CAS DataBase Reference) | | NIST Chemistry Reference | Butanoyl chloride(141-75-3) | | EPA Substance Registry System | Butanoyl chloride (141-75-3) |
| Hazard Codes | F,C | | Risk Statements | 11-34 | | Safety Statements | 16-23-26-36-45 | | RIDADR | UN 2353 | | WGK Germany | 1 | | F | 13 | | Autoignition Temperature | 280 °C | | TSCA | TSCA listed | | HS Code | 2915 90 70 | | HazardClass | 3 | | PackingGroup | II | | Storage Class | 3 - Flammable liquids | | Hazard Classifications | Acute Tox. 3 Inhalation
Acute Tox. 4 Oral
Aquatic Acute 1
Aquatic Chronic 2
Eye Dam. 1
Flam. Liq. 2
Skin Corr. 1B | | Hazardous Substances Data | 141-75-3(Hazardous Substances Data) |
| | Butyryl chloride Usage And Synthesis |
| Chemical Properties | Butyryl chloride is a colorless to light yellow liquid with a strong pungent odor. It undergoes vigorous hydrolysis with water; decomposes in water; soluble in almost aprotic organic solvents. It is used as an intermediate for organic synthesis for the preparation of pharmaceuticals, agrochemicals, dyes, cellulose esters, and peroxide compounds. | | Uses | Butyryl chloride is used as an intermediate for the synthesis of active pharmaceutical ingredients benzoyl peroxide, t-butyl perbenzoate, and benzophenone. It is also used as an acylation reagent. Further, it is used in the preparation of peroxides such as benzoyl peroxide, benzophenone and t-butyl perbenzoate. In addition to this, it is involved in the preparation of chromones and antiproliferative agents.
Butyryl chloride has been used to esterify wood meal dissolved in the ionic liquid, 1-butyl-3-methylimidazolium chloride. | | Preparation | Butyryl chloride is obtained by the reaction of butyric acid with thionyl chloride. Heat the thionyl chloride to reflux, add butyric acid dropwise over approximately 4 hours, reflux for another hour, then distill. Collect the fraction at 95–115°C, redistill once, and collect the fraction at 101–105°C to obtain the final product, with a yield of over 70%. Phosphorus trichloride can also be added to the reaction, yielding a 75% yield. | | Reactions | Butyryl chloride reacts with compounds such as alcohols, phenols and amines to introduce a butyryl group (-COC₃H₇) into the molecule, yielding important products such as esters and amides. For example, it reacts with ethanol to form ethyl butyrate and with aniline to form N-butyrylaniline. | | General Description | A clear colorless liquid with a sharp odor. Slightly denser than water. Flash point near 20°F. Severely irritates skin, eyes, and mucous membranes. Used to make other chemicals. | | Air & Water Reactions | Highly flammable. Fumes in air. Decomposes exothermically in water to give corrosive hydrochloric acid. | | Reactivity Profile | Butyryl chloride slowly dissolves in water with decomposition and formation of a weakly acidic solution. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291]. | | Health Hazard | Extremely destructive to the mucous membranes, upper respiratory tract, eyes, and skin. Inhalation may cause death as a result of spasm, inflammation and edema of the larynx and bronchi, chemical pneumonitis, and pulmonary edema. Symptoms of exposure include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. | | Fire Hazard | Special Hazards of Combustion Products: Emits toxic fumes of chlorine gas | | Flammability and Explosibility | Flammable | | Purification Methods | Check IR to see if there is a significant peak at 3000-3500 cm-1 (br) for OH. If OH is present then reflux with less than one mole equivalent of SOCl2 for 1hour and distil directly. The fraction boiling between 85-100o is then refractionated at atmospheric pressure. Keep all apparatus free from moisture and store the product in sealed glass ampoules under N2. LACHRYMATORY; handle in a good fume hood. [Hefferich & Schaeffer Org Synth Coll Vol I 147 1941, Beilstein 2 IV 803.] |
| | Butyryl chloride Preparation Products And Raw materials |
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