Phenyl diselenide
Diphenyl diselenide
CAS: 1666-13-3
Molecular Formula: C12H10Se2
Phenyl diselenide - Names and Identifiers
| Name | Diphenyl diselenide |
| Synonyms | Two phenyltwo se diphenyldiselane Phenyl diselenide PHENYL DISELENIDE diphenyl-diselenid Bis(phenylselenide) Diphenyl diselenide Diselenide,diphenyl 1,2-Diphenyldiselane DIPHENYL DISELENIDE FOR SYNTHESIS |
| CAS | 1666-13-3 |
| EINECS | 216-780-2 |
| InChI | InChI=1/C12H10Se2/c1-3-7-11(8-4-1)13-14-12-9-5-2-6-10-12/h1-10H |
Phenyl diselenide - Physico-chemical Properties
| Molecular Formula | C12H10Se2 |
| Molar Mass | 312.13 |
| Density | 1.5570 |
| Melting Point | 60 °C |
| Boling Point | 202 °C / 11mmHg |
| Flash Point | 182°C |
| Water Solubility | Insoluble |
| Vapor Presure | 1.48E-05mmHg at 25°C |
| Appearance | Powder |
| Specific Gravity | 1.84 |
| Color | yellow |
| Exposure Limit | ACGIH: TWA 0.2 mg/m3NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
| BRN | 2047179 |
| Storage Condition | Store below +30°C. |
| Sensitive | 8: reacts rapidly with moisture, water, protic solvents |
| Refractive Index | 1.7430 |
| Physical and Chemical Properties | Yellow crystals. Melting Point 63-65 °c, soluble in hot alcohol, ether and xylene. |
Phenyl diselenide - Risk and Safety
| Risk Codes | R23/25 - Toxic by inhalation and if swallowed. R33 - Danger of cumulative effects R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S20/21 - S28 - After contact with skin, wash immediately with plenty of soap-suds. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S28A - |
| UN IDs | UN 3283 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | JM9152500 |
| TSCA | Yes |
| HS Code | 2931 90 00 |
| Hazard Class | 6.1 |
| Packing Group | II |
Phenyl diselenide - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | Used to synthesize allyl alcohol, allyl ether, acetate and α,β-unsaturated carbonyl compounds. |
| Production method | Bromobenzene and magnesium chips are made into phenylmagnesium bromide in absolute ether, and then selenium powder is added in batches to maintain the reactants Intense reflux state. After half an hour, add water to destroy the remaining Grignard reagent, cool, stir and drop bromine to the mixture, and then slowly add ammonium chloride aqueous solution. Filter, filter cake with ether wash with ether. Merge the filtrate and washing liquid, evaporate the solvent, dissolve the precipitated solid in hot hexane, filter out the insoluble matter, cool the filtrate to 6 ℃, filter, dry, and obtain diselenobenzene |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | intravenous injection-mouse LD50: 28 mg/kg |
| flammability hazard characteristics | open flame is combustible; high heat decomposes toxic selenide; acts with acid |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants, food additives and acids |
| fire extinguishing agent | foam, mist water, sand |
| occupational standard | TLV-TWA 0.2 (selenium) mg/m3; STEL 0.3 (selenium) mg/m3 |
Last Update：2024-04-10 22:29:15
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