- Selenourea
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Cas Database |
| Name |
Selenourea |
EINECS | N/A |
| CAS No. | 630-10-4 | Density | g/cm3 |
| PSA | 52.04000 | LogP | -0.32720 |
| Solubility | Soluble in water, alcohol and ether. | Melting Point |
210-215oC (dec.) |
| Formula | CH4N2Se | Boiling Point | °Cat760mmHg |
| Molecular Weight | 123.016 | Flash Point | °C |
| Transport Information | N/A | Appearance | slightly pink to grey crystalline needles |
| Safety | Poison by ingestion and intravenous routes. When heated to decomposition it emits very toxic fumes of NOx and Se. See also SELENIUM COMPOUNDS. | Risk Codes | R23/25; R33; R50/53 |
| Molecular Structure |
|
Hazard Symbols |
 T, N
|
| Synonyms |
λ1-selanylmethanimidamide;Selenouronium;Urea,seleno;EINECS 211-129-9;Selenourea;2-Selenourea;Carbamimidoselenoic acid;Selenoharnstoff;RCRA waste no. P103;selenocarbamate;RCRA waste number P103; |
Article Data | 16 |
Selenourea Synthetic route
| Conditions | Yield |
|---|---|
| With phosphorus selenide; water In ethanol Heating; | 37% |
| With phosphorus selenide; water for 1h; Heating; | 37% |
| With hydrogen selenide In water at 24.9℃; Rate constant; Kinetics; Mechanism; var. temperatures; |
| Conditions | Yield |
|---|---|
| With sodium hydrogen selenide In ethanol |
- 30633-56-8
dicarbamimidoyl-diselane; hydrochloride
A
- 7647-01-0
hydrogenchloride
B
- 420-04-2
CYANAMID
C
- 630-10-4
selenourea
- 630-10-4
selenourea
| Conditions | Yield |
|---|---|
| With hydroxide In water Equilibrium constant; Further Variations:; Reagents; |
| Conditions | Yield |
|---|---|
| In diethyl ether accelerated with NH3; | |
| In water little higher temp.; | |
| In water little higher temp.; |
| Conditions | Yield |
|---|---|
| Stage #1: selenium With sodium tetrahydroborate In ethanol for 0.5h; Cooling with ice; Stage #2: carbamimidothioic acid methyl ester With sodium carbonate In ethanol at 20℃; for 22h; Reflux; | 30.1 g |
- 630-10-4
selenourea
- 108052-76-2
4-(bromomethyl)benzoic acid 1,1-dimethylethyl ester
| Conditions | Yield |
|---|---|
| In ethanol at 65℃; for 7h; Substitution; | 100% |
- 630-10-4
selenourea
- 57796-75-5
divinyl selenide
| Conditions | Yield |
|---|---|
| With hydrogenchloride In ethanol; water at 50 - 56℃; | 100% |
Selenourea Chemical Properties
Product Name: Selenourea
Synonyms: Selenourea ; 2-Selenourea ; Carbamimidoselenoic acid ; Selenoharnstoff
Product Categories: Building Blocks;Organic Building Blocks;Selenium Compounds
CAS NO: 630-10-4
Molecular Formula of Selenourea (CAS NO.630-10-4) : CH4N2Se
Molecular Weight of Selenourea (CAS NO.630-10-4) :123.02
Molecular Structure of Selenourea (CAS NO.630-10-4) :
EINECS: 211-129-9
Flash Point: 93.5 °C
Enthalpy of Vaporization: 46.76 kJ/mol
Boiling Point: 230.9 °C at 760 mmHg
Vapour Pressure: 0.0642 mmHg at 25°C
Melting Point: 210-215 °C (dec.)
Storage temp: 2-8°C
Sensitive Air & Moisture Sensitive
Appearance:Slightly pink to grey crystalline needles
Selenourea Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| guinea pig | LD50 | skin | > 50mg/kg (50mg/kg) | National Technical Information Service. Vol. 0TS0570916, | |
| mouse | LD50 | intravenous | 56mg/kg (56mg/kg) | U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#05665, | |
| rat | LD50 | oral | 50mg/kg (50mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Toxicology and Applied Pharmacology. Vol. 20, Pg. 89, 1971. |
Selenourea Consensus Reports
Selenium and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.
Selenourea Safety Profile
Poison by ingestion and intravenous routes. When heated to decomposition it emits very toxic fumes of NOx and Se. See also SELENIUM COMPOUNDS.
Hazard Codes
T,
N
Risk Statements 23/25-33-50/53
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 Statements 20/21-28-45-60-61
S20/21: When using, do not eat, drink or smoke
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.
RIDADR UN 3283 6.1/PG 2
WGK Germany 3
RTECS YU1820000
F 8-10-23
HazardClass 6.1
PackingGroup II
Selenourea Standards and Recommendations
OSHA PEL: TWA 0.2 mg(Se)/m3
ACGIH TLV: TWA 0.2 mg(Se)/m3
DFG MAK: 0.1 mg(Se)/m3
Selenourea Specification
1.Health Hazard :TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
2.Fire Hazard :Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
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