Basic information
- Name:
2-Benzoxazolinone
- CAS No.:
59-49-4
- Molecular Structure:
- Formula:
- C7H5NO2
- Molecular Weight:
- 135.13
- Synonyms:
- 2-Benzoxazolinone(6CI,7CI,8CI);1,3-Benzoxazol-2(3H)-one;2(3H)-Benzoxazolinone;2-Benzoxazolol;2-Hydroxybenzoxazole;2-Oxo-2,3-dihydrobenzoxazole;Benzo[d]oxazol-2(3H)-one;Carbamic acid, (2-hydroxyphenyl)-, g-lactone;NSC 3812;
- EINECS:
- 200-430-0
- Density:
- 1.323 g/cm3
- Melting Point:
- 137-139 °C(lit.)
- Boiling Point:
- 299 °C at 760 mmHg
- Flash Point:
- 134.6 °C
- Solubility:
- soluble in hot water
- Appearance:
- light beige to brown-grey powder
- Hazard Symbols:
Xn- Risk Codes:
- 20/21/22-22-24/25-36/37/38
- Safety Description:
- 36-24/25-26 Details
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Chemistry
The Molecular formula of 2-BENZOXAZOLINONE(59-49-4): C7H5NO2
The Molecular Weight of 2-BENZOXAZOLINONE(59-49-4): 135.12
Molecular Structure:
EINECS: 200-430-0
Melting point: 137-139 °C(lit.)
Boiling Point: 299 °C at 760 mmHg
Flash Point: 134.6 °C
Index of Refraction: 1.586
Molar Refractivity: 34.28 cm3
Molar Volume: 102 cm3
Polarizability: 13.59 10-24 cm3
Surface Tension: 46.1 dyne/cm
Density: 1.323 g/cm3
Enthalpy of Vaporization: 56.05 kJ/mol
Vapour Pressure: 0.00069 mmHg at 25°C
Water Solubilit: soluble in hot water
BRN: 119481
IUPAC Name: 3H-1,3-benzoxazol-2-one
Synonyms: 3H-BENZOOXAZOL-2-ONE;2-HYDROXYBENZOXAZOLE;2,3-DIHYDRO-1,3-BENZOXAZOL-2-ONE;2-BENZOXAZOLINONE;2-BENZOXAZOLONE;2 (3H)-BENZOXAZOLONE;AKOS B029757;1,3-BENZOXAZOL-2(3H)-ONE;
The Molecular Weight of 2-BENZOXAZOLINONE(59-49-4): 135.12
Molecular Structure:
EINECS: 200-430-0
Melting point: 137-139 °C(lit.)
Boiling Point: 299 °C at 760 mmHg
Flash Point: 134.6 °C
Index of Refraction: 1.586
Molar Refractivity: 34.28 cm3
Molar Volume: 102 cm3
Polarizability: 13.59 10-24 cm3
Surface Tension: 46.1 dyne/cm
Density: 1.323 g/cm3
Enthalpy of Vaporization: 56.05 kJ/mol
Vapour Pressure: 0.00069 mmHg at 25°C
Water Solubilit: soluble in hot water
BRN: 119481
IUPAC Name: 3H-1,3-benzoxazol-2-one
Synonyms: 3H-BENZOOXAZOL-2-ONE;2-HYDROXYBENZOXAZOLE;2,3-DIHYDRO-1,3-BENZOXAZOL-2-ONE;2-BENZOXAZOLINONE;2-BENZOXAZOLONE;2 (3H)-BENZOXAZOLONE;AKOS B029757;1,3-BENZOXAZOL-2(3H)-ONE;
Uses
2-BENZOXAZOLINONE(59-49-4) is used for the production of dyes and synthetic intermediates.
Toxicity Data With Reference
| 1. | orl-rat LD50:700 mg/kg | MDCHAG Medicinal Chemistry: A Series of Monographs. 4 (1)(1964),308. | ||
| 2. | orl-mus LD50:554 mg/kg | GTPZAB Gigiena Truda i Professionalnye Zabolevaniia. Labor Hygiene and Occupational Diseases. 31 (8)(1987),36. | ||
| 3. | ipr-mus LD50:400 mg/kg | NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD277-689 . |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Poison by intraperitoneal route. Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NOx.
The Hazard Codes of 2-BENZOXAZOLINONE(59-49-4):
Xn
Hazard Note: Harmful
The Risk Statements information of 2-BENZOXAZOLINONE(59-49-4):
22: Harmful if swallowed
20/21/22: Harmful by inhalation, in contact with skin and if swallowed
24/25: Toxic in contact with skin and if swallowed
36/37/38: Irritating to eyes, respiratory system and skin
The Safety Statements information of 2-BENZOXAZOLINONE(59-49-4):
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
24/25: Avoid contact with skin and eyes
WGK Germany: 3
RTECS: DM4905000
The Hazard Codes of 2-BENZOXAZOLINONE(59-49-4):
Xn Hazard Note: Harmful
The Risk Statements information of 2-BENZOXAZOLINONE(59-49-4):
22: Harmful if swallowed
20/21/22: Harmful by inhalation, in contact with skin and if swallowed
24/25: Toxic in contact with skin and if swallowed
36/37/38: Irritating to eyes, respiratory system and skin
The Safety Statements information of 2-BENZOXAZOLINONE(59-49-4):
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
24/25: Avoid contact with skin and eyes
WGK Germany: 3
RTECS: DM4905000
