ABSTRACT
CASRN: 92-93-3; molecular formula: C12H9NO2; FW: 199.21; RTECS: DV5600000; Merck Index: 12, 6690 Physical state, color, and odor: White to yellow crystals with a sweetish odor Melting point (°C): 114 (Weast, 1986) Boiling point (°C): 340 (Weast, 1986) Diffusivity in water (x 10-5 cm2/sec): 0.59 at 20 °C using method of Hayduk and Laudie (1974) Flash point (°C): 144.5 (NIOSH, 1997) Lower explosive limit (%): Not applicable (NFPA, 1984) Upper explosive limit (%): Not applicable (NFPA, 1984) Solubility in organics: Soluble in acetic acid, benzene, chloroform, and ether (Weast, 1986) Exposure limits: Potential occupational carcinogen. Given that no standards have been established, NIOSH (1997) recommends the most reliable and protective respirators be used, i.e., a self-contained breathing apparatus that has a full facepiece and is operated under positive-pressure or a supplied-air respirator that has a full facepiece and is operated under pressure-demand or under positive-pressure in combination with a self-contained breathing apparatus operated under pressure-demand or positive-pressure. OSHA recommends that worker exposure to this chemical is to be controlled by use of engineering control, proper work practices, and proper selection of personal protective equipment. Specific details of these requirements can be found in CFR 1910.1003-1910.1016. Toxicity: Acute oral LD50 for rats 2,230 mg/kg, rabbits 1,970 mg/kg (quoted, RTECS, 1985). Uses: Organic synthesis.
