Dowtherm Q

Agent Name
Dowtherm Q
CAS Number
68987-42-8
Major Category
Other Classes
Synonyms
1,1-Diphenylethane (50-60%); Ethylated benzenes (30-50%); [AIHA] Dowtherm Q Heat Transfer Fluid; [MSDSonline]
Category
Other Organic Compounds
Description
Colorless to pale yellow liquid with an aromatic odor; [MSDSonline]
Sources/Uses
Used as a heat transfer liquid in closed loop heating or cooling systems; [AIHA]
Comments
A mixture of 50-60% 1,1-Diphenylethane (612-00-0) and 30-50% ethylated benzenes (68987-42-8); [AIHA] Ethylated benzenes are also called ethylenated benzene residues and polyethylbenzene residues; Ethylated benzenes are produced from the distillation of ethylbenzene and consist primarily of polyethylbenzenes, ethyldiphenyl ethanes and small amounts of diethylbenzenes and butylbenzenes. [ChemIDplus] Causes pneumonitis if aspirated; A skin irritant; [MSDSonline] No adverse effects in a 2-week inhalation study of rats at 11.25 ppm; A mild eye irritant; In workers were exposed at levels of 0.02 to 0.03 ppm, no health effects were noted. [AIHA]
Biomedical References

Exposure Assessment

Vapor Pressure
0.0149 mm Hg
ERPG-1
Insufficient data
ERPG-2
150 mg/m3
ERPG-3
Insufficient data
WEEL
1 ppm

Diseases, Processes, and Activities Linked to This Agent

Other Information
No other related information on this agent was found.