RCRA waste no. P103
selenourea
CAS: 630-10-4
Molecular Formula: CH4N2Se
RCRA waste no. P103 - Names and Identifiers
| Name | selenourea |
| Synonyms | HSDB 6040 Selenourea NSC 227840 selenourea 2-seleno-ure 2-Selenourea Selenouronium Urea, seleno- RCRA waste no. P103 Diaminomethaneselone carbamimidoylselanyl RCRA waste number P103 Carbamimidoselenoic acid |
| CAS | 630-10-4 |
| EINECS | 211-129-9 |
| InChI | InChI=1/CH4N2Se/c2-1(3)4/h(H4,2,3,4) |
RCRA waste no. P103 - Physico-chemical Properties
| Molecular Formula | CH4N2Se |
| Molar Mass | 123.02 |
| Melting Point | 210-215°C (dec.) |
| Boling Point | 200°C (rough estimate) |
| Flash Point | 93.453°C |
| Water Solubility | Soluble in water, alcohol and ether. |
| Vapor Presure | 0.064mmHg at 25°C |
| Appearance | solid |
| Color | pink |
| Exposure Limit | ACGIH: TWA 0.2 mg/m3NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
| BRN | 1734744 |
| Storage Condition | 2-8°C |
| Sensitive | Air & Moisture Sensitive |
RCRA waste no. P103 - 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. |
| UN IDs | UN 3283 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | YU1820000 |
| FLUKA BRAND F CODES | 8-10-23 |
| TSCA | Yes |
| HS Code | 29310099 |
| Hazard Class | 6.1 |
| Packing Group | II |
RCRA waste no. P103 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | selenourea is an organic compound, which is mainly used as a reagent for Photometric Determination of osmium and can also be used in organic synthesis. |
| preparation method | selenourea was originally prepared by the reaction of hydrogen selenide and cyanamide in 1884 from: h2Se NCNH2 → SeC(NH2)2 this process can be used for industrial production. Some selenoureas containing substituents can be prepared by the reaction of isoselenocyanates and secondary amines: RN = C = Se nhr' R "→ Se = C(NRH)(NR 'R" H) |
| production method | is made by the interaction of hydrogen selenide and cyanamide. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 50 mg/kg |
| flammability hazard characteristics | thermal decomposition of toxic nitric oxide and selenide gases |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored and transported separately from food raw materials |
| fire extinguishing agent | sand, water, foam |
| Occupational Standard | TWA 0.2 mg/m3; Tel 0.3 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
