... weight(D oC):1.08, 3,m.p.: 28, 4,refractive index: 476,Uses,As purificant of gases; as raw material in ... , specific weight(D °C ) 1.08,m.p. 28°C, refractive index 476, flash point: 146°CCharacters Colorless or yellowish ropy liquid ... , 2 lower than in carbon tetrachloride at 25°C Quality Index Index nameTop-gradeAppearanceColorless or yellowish ropy liquidOdorSlightly ammoniacPurity (% wt min.)99 ...