Basic information
- Name:
2H-Benzimidazol-2-one,5-amino-1,3-dihydro-
- Superlist Name:
- 5-Amino-1,3-dihydro-2H-benzimidazol-2-one
- CAS No.:
95-23-8
- Molecular Structure:
- Formula:
- C7H7N3O
- Molecular Weight:
- 149.15
- Deleted CAS:
- 40352-51-0
- Synonyms:
- 2-Benzimidazolinone,5-amino- (7CI,8CI);2-Hydroxy-5-aminobenzimidazole;5-Amino-1,3-dihydrobenzimidazol-2-one;5-Amino-2(3H)-benzimidazolone;5-Amino-2-benzimidazolinone;5-Amino-2-hydroxybenzimidazole;5-Amino-2-oxo-2,3-dihydro-1H-benzimidazole;
- EINECS:
- 202-401-8
- Density:
- 1.363 g/cm3
- Boiling Point:
- 201.4 °C at 760 mmHg
- Flash Point:
- 75.6 °C
- Hazard Symbols:
Xi- Risk Codes:
- 36/37/38
- Safety Description:
- 26-36/37/39 Details
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Chemistry
Molecular Structure of 2H-Benzimidazol-2-one,5-amino-1,3-dihydro- (CAS NO.95-23-8):
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Empirical Formula: C7H7N3O
Molecular Weight: 149.15
H bond acceptors: 4
H bond donors: 4
Freely Rotating Bonds: 1
Polar Surface Area: 26.79 Å2
Index of Refraction: 1.657
Molar Refractivity: 40.26 cm3
Molar Volume: 109.3 cm3
Surface Tension: 58.1 dyne/cm
Density: 1.363 g/cm3
Flash Point: 75.6 °C
Enthalpy of Vaporization: 43.77 kJ/mol
Boiling Point: 201.4 °C at 760 mmHg
Vapour Pressure: 0.308 mmHg at 25°C
InChI
InChI=1/C7H7N3O/c8-4-1-2-5-6(3-4)10-7(11)9-5/h1-3H,8H2,(H2,9,10,11)
Smiles
O=c1[nH]c2c(cc(N)cc2)[nH]1
EINECS: 202-401-8
Product Categories: Intermediates of Dyes and Pigments ; benzimidazole ; Benzimidazole Series; Imidazol&Benzimidazole; Miscellaneous
Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
HazardClass: IRRITANT
Specification
2H-Benzimidazol-2-one,5-amino-1,3-dihydro- , with CAS number of 95-23-8, can be called 5-amino-1,3-dihydro-2h-benzimidazol-2-on ; 5-amino-2-benzimidazolinone ; 5-amino-2-hydroxybenzimidazole ; 5-aminobenzimidazolinone ; 5-aminobenzimidazolone ; 5-amino-1,3-dihydro-2h-benzimidazol-2-one ; 5-amino-1,3-dihydro-benzoimidazol-2-one ; 5(6)-aminobenzoimidazolone .
