ABSTRACT
OCH3 CASRN: 104-94-9; DOT: 2431; DOT label: Poison; molecular formula: C7H9NO; FW: 123.15; RTECS: BZ5450000; Merck Index: 12, 705 Physical state, color, and odor: Yellow to light brown powder, leaflets, solid or crystals with a characteristic amine or ammonialike odor Melting point (°C): 57.2 (Weast, 1986) 56-60 (Acros Organics, 2002) Boiling point (°C): 240-243 (Acros Organics, 2002) Density (g/cm3): 1.096 at 20 °C (Aldrich, 1990) Diffusivity in water (x 10-5 cm2/sec): 0.73 at 20 °C using method of Hayduk and Laudie (1974) Dissociation constant, pKa: 4.49 at 25 °C (Dean, 1973) Flash point (°C): 107 (Acros Organics, 2002) Henry’s law constant (x 10-8 atm⋅m3/mol): 6.62 at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999) Ionization potential (eV): 7.44 (NIOSH, 1994) 7.82 (Franklin et al., 1969) Soil organic carbon/water partition coefficient, log Koc: Unavailable because experimental methods for estimation of this parameter for anilines are lacking in the documented literature Octanol/water partition coefficient, log Kow: 0.95 (shake flask, Ichikawa et al., 1969)
0.80 at 23 °C (shake flask-UV spectrophotometry, Ezumi and T. Kubota, 1980) Solubility in organics: Soluble in acetone, alcohol, benzene, and ether (Weast, 1986) Solubility in water: 3.3 mg/L at 20-25 °C using method of Kenaga and Goring (1980) Vapor pressure (mmHg): 6 x 10-3 at 25 °C (NIOSH, 1994) Environmental fate: Chemical/Physical. Releases toxic nitrogen oxides when heated to decomposition (Sax and Lewis, 1987). Exposure limits: NIOSH REL: TWA 0.5 mg/m3, IDLH 50 mg/m3; OSHA PEL: TWA 0.5 mg/m3; ACGIH TLV: TWA 0.1 ppm (adopted). Symptoms of exposure: Anemia and cyanosis (Patnaik, 1992) Toxicity: Acute oral LD50 for rats 1,400 mg/kg, mice 810 mg/kg, rabbits 2,900 mg/kg (quoted, RTECS, 1985). Uses: Azo dyestuffs; chemical intermediate.
