物理化学性质
熔点30-180 °C
沸点>250 °C
密度>1 g/cm3
蒸气压0-0Pa at 20℃
溶解度Slightly soluble in water; partly soluble in ethanol , in ether and in volatile oils.
形态As stated by ACGIH:
The pitch of coal tar is the black or dark brown amorphous residue that remains after the redistillation process. The volatiles contain a large quantity of lower molecular weight polycyclic hydrocarbons. As these hydrocarbons (naphthalene, fluorene, anthracene, acridine, phenanthrene) sublime into the air there is an increase of benzo(a)pyrene (BaP or 3,4-benzpyrene) and other higher weight polycyclic hydrocarbons in the tar and in the fumes. Polycyclic hydrocarbons, known to be carcinogenic, are of this large molecular type.
The pitch of coal tar is the black or dark brown amorphous residue that remains after the redistillation process. The volatiles contain a large quantity of lower molecular weight polycyclic hydrocarbons. As these hydrocarbons (naphthalene, fluorene, anthracene, acridine, phenanthrene) sublime into the air there is an increase of benzo(a)pyrene (BaP or 3,4-benzpyrene) and other higher weight polycyclic hydrocarbons in the tar and in the fumes. Polycyclic hydrocarbons, known to be carcinogenic, are of this large molecular type.
水溶解性1.54μg/L at 20℃
Dielectric constant2.0（Ambient）
介电常数2.0（Ambient）
LogP6.13 at 20℃
(IARC)致癌物分类1 (Vol. 35, Sup 7, 100F) 2012
安全数据
警示词危险
危险性描述H340-H350-H360FD
职业暴露等级D
职业暴露限值TWA: 0.1 mg/m3 (cyclohexane-extractable fraction)
TSCATSCA listed
立即威胁生命和健康浓度80 mg/m3