96-09-3
Styrene oxide
CAS: 96-09-3
Molecular Formula: C8H8O
96-09-3 - Names and Identifiers
96-09-3 - Physico-chemical Properties
| Molecular Formula | C8H8O |
| Molar Mass | 120.15 |
| Density | 1.054 g/mL at 25 °C (lit.) |
| Melting Point | -37 °C (lit.) |
| Boling Point | 194 °C (lit.) |
| Flash Point | 175°F |
| Water Solubility | 3 g/L (20 ºC) |
| Solubility | 3g/l |
| Vapor Presure | <1 mm Hg ( 20 °C) |
| Vapor Density | 4.14 (vs air) |
| Appearance | Liquid |
| Color | Clear colorless to slightly yellow |
| BRN | 108582 |
| Storage Condition | Store below +30°C. |
| Stability | Stability Unstable - polymerises readily with compounds possessing a labile hydrogen (such as acids and alcohols) in the presence of acids, bases or some salts. Combustible. |
| Explosive Limit | 1.1-22%(V) |
| Refractive Index | n20/D 1.535(lit.) |
| Physical and Chemical Properties | Character: colorless liquid. boiling point 191 ℃ relative density 1.049 solubility soluble in water. |
| Use | For pharmaceutical, perfume intermediates |
96-09-3 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R45 - May cause cancer R21 - Harmful in contact with skin R36 - Irritating to the eyes R43 - May cause sensitization by skin contact R36/38 - Irritating to eyes and skin. R20/21 - Harmful by inhalation and in contact with skin. R46 - May cause heritable genetic damage |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2810 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | CZ9625000 |
| TSCA | Yes |
| HS Code | 29109000 |
| Hazard Class | 6.1 |
| Packing Group | III |
96-09-3 - Nature
Open Data Verified Data
colorless liquid. Relative density 1. 049, boiling point 191 ℃, soluble in water.
Last Update：2024-01-02 23:10:35
96-09-3 - Preparation Method
Open Data Verified Data
from styrene, sodium bromide, sulfuric acid, liquid caustic soda by halogenation reaction, saponification reaction, distillation and ethylene oxide.
Last Update：2022-01-01 10:39:40
96-09-3 - Use
Open Data Verified Data
B an intermediate of benzene ethanol.
Last Update：2022-01-01 10:39:39
96-09-3 - Safety
Open Data Verified Data
see ethylene oxide for its toxicity and protection. 200kg galvanized iron barrel. Store in a cool, dry, ventilated warehouse, away from fire, heat, moisture, sunscreen, sealed storage. According to the general provisions of the storage and transportation of chemicals.
Last Update：2022-01-01 10:39:40
96-09-3 - Reference Information
| LogP | 1.61 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| (IARC) carcinogen classification | 2A (Vol. Sup 7, 60, 121) 2019 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | styrene oxide, also known as styrene oxide, is an important organic intermediate, which can be used as an epoxy resin diluent, UV absorber, it is also an important intermediate in organic synthesis, pharmacy and perfume industry. For example, Styrene oxide is the raw material for producing levamisole. |
| preparation method | styrene oxide is obtained from styrene, sodium bromide, sulfuric acid, and liquid caustic soda by halogenation, saponification, and rectification. 450ml of chloroform and 42g(0.3mol) of peroxybenzoic acid were added to a reaction flask equipped with a stirrer and a thermometer, and the mixture was stirred and dissolved. The ice-salt bath was cooled to below 0 °c and 30g(0.19mol) of styrene (2) was added. The reaction was stirred for 1H and kept at 0 °c for 24h. There is only a small amount of peroxybenzoic acid in the reaction solution (a certain volume of the reaction solution can be taken to react with the acidic potassium iodide solution, and then the standard sodium thiosulfate titration is used to prove it). The reaction solution was washed with an excess of 10% sodium hydroxide solution to remove the generated benzoic acid, then washed with water to remove alkali, dried over anhydrous magnesium sulfate, fractionated, and then fractionated under reduced pressure after removing chloroform, the fraction of 101 ° C./5.3kPa was collected to obtain 25g of styrene (1) in a yield of 72%. |
| Use | styrene oxide is a major (toxic) metabolite of styrene, catalyzed by epoxidase. used in pharmaceutical and Fragrance Intermediates pharmaceutical intermediates. Intermediates for β-phenylethyl alcohol. use: Not available |
| safety | see ethylene oxide for its toxicity and protection. 200kg galvanized iron barrel. Store in a cool, dry, ventilated warehouse, away from fire, heat, moisture, sunscreen, sealed storage. According to the general provisions of the storage and transportation of chemicals. |
| Application | The phenylethyl alcohol prepared by catalytic hydrogenation of styrene oxide is the main component of rose oil, clove oil and orange flower oil, and is widely used in the preparation of food, tobacco, soap and cosmetic flavor, is a kind of aroma, cheap, very large amount of important synthetic spices. |
| preparation | 1g of styrene, 1g of isobutyraldehyde and G of ammonium chloride were added to a ML reaction flask, followed by 50ml of acetonitrile, 500ml oxygen spheres were attached and magnetic stirring was carried out at 60 °c for 8H. Samples were taken for analysis and the reaction was completed. The conversion of styrene was 100% and the selectivity to styrene oxide was 82%. |
| production method | 1.42g of peroxybenzoic acid, 30g of styrene and of chloroform were mixed and kept at 0 °c for 24 hours. Sampling inspection, there should be a slight amount of peroxybenzoic acid. The reaction product was washed with an excess of 10% sodium hydroxide solution to remove benzoic acid. The alkali was then removed with water, dried over anhydrous sodium sulfate, and the 188-192 ° C. Fraction was collected by distillation to obtain 24-26g of styrene oxide. Styrene oxide is obtained from styrene, sodium bromide, sulfuric acid and liquid caustic soda by halogenation, saponification and rectification. |
| spontaneous combustion temperature | 928 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:53
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