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Cas Database |
| Name |
DL-Selenocystine |
EINECS | N/A |
| CAS No. | 2897-21-4 | Density | g/cm3 |
| PSA | 126.64000 | LogP | -0.62920 |
| Solubility | N/A | Melting Point |
214.5°C |
| Formula | C6H12 N2 O4 Se2 | Boiling Point | 538.3°Cat760mmHg |
| Molecular Weight | 334.092 | Flash Point | 279.3°C |
| Transport Information | N/A | Appearance | N/A |
| Safety | Poison by subcutaneous and intraperitoneal routes. When heated to decomposition it emits toxic fumes of NOx and Se. | Risk Codes | 23/25-33-50/53 |
| Molecular Structure |
|
Hazard Symbols |
 
|
| Synonyms |
Alanine,3,3'-diselenodi-, DL- (8CI); DL-Alanine, 3,3'-diselenobis-; DL-Selenocystine;Seleno-DL-cystine; Selenocystine |
Article Data | 24 |
DL-Selenocystine Chemical Properties
Empirical Formula: C6H12N2O4Se2
Molecular Weight: 334.0905 g/mol
Flash Point: 279.3 °C
Enthalpy of Vaporization: 89.19 kJ/mol
Boiling Point: 538.3 °C at 760 mmHg
Vapour Pressure: 5.12E-13 mmHg at 25 °C
Structure of DL-Selenocystine (CAS NO.2897-21-4):
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Product Category of DL-Selenocystine (CAS NO.2897-21-4): Dipeptides;Dipeptides and Tripeptides;Peptides
DL-Selenocystine Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | oral | 76mg/kg (76mg/kg) | Japanese Journal of Toxicology and Environmental Health. Vol. 39, Pg. 289, 1993. | |
| rat | LD50 | intraperitoneal | 8463ug/kg (8.463mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 108, Pg. 437, 1953. | |
| rat | LDLo | subcutaneous | 13mg/kg (13mg/kg) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE | Archives of Toxicology. Vol. 45, Pg. 207, 1980. |
DL-Selenocystine Safety Profile
Poison by subcutaneous and intraperitoneal routes. When heated to decomposition it emits toxic fumes of NOx and Se.
Hazard Codes of DL-Selenocystine (CAS NO.2897-21-4): 
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:When using, do not eat or drink.
S21:When using do not 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.
DL-Selenocystine Standards and Recommendations
OSHA PEL: TWA 0.2 mg(Se)/m3
ACGIH TLV: TWA 0.2 mg(Se)/m3
DL-Selenocystine Specification
Now, DL-Selenocystine , ever using cas register number: 1464-43-3, its cas register number is 2897-21-4. It also can be called Alanine, 3,3'-diselenodi-, DL- ; and Seleno-DL-cystine .
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