44570
Dowtherm® A
eutectic mixture of 26.5% diphenyl + 73.5% diphenyl oxide
Synonym(s):
Diphyl
InChI
1S/C12H10O.C12H10/c1-3-7-11(8-4-1)13-12-9-5-2-6-10-12;1-3-7-11(8-4-1)12-9-5-2-6-10-12/h1-10H;1-10H
SMILES string
c1ccc(cc1)-c2ccccc2.O(c3ccccc3)c4ccccc4
InChI key
MHCVCKDNQYMGEX-UHFFFAOYSA-N
refractive index
n20/D 1.590
Quality Level
functional group
phenoxy, phenyl
Related Categories
General description
Dowtherm® A is a thermally stable organic heat transfer fluid composed of a eutectic mixture of highly stable compounds, biphenyl, and diphenyl oxide. Dowtherm® A is suitable for high-temperature heat transfer applications up to 400 °C. This fluid can be used in both liquid and vapor phase systems.
Application
Dowtherm® A can be used as a high boiling solvent in cyclization reactions. For example, it is used to synthesize:
- 1-Hydroxy-5-methoxy-1,2-dihydrobenzo[f][2,7]naphthyridines from 2-chloro-3-formyl quinolines.
- Isoindolinone derivatives via intramolecular Diels–Alder cycloaddition reactions of substituted pyridazines.
- Phosphorylated azaheterocycles from 2-diethoxyphosphoryl-3-methoxyacrylate via intramolecular cyclizations under thermal conditions.
Legal Information
DOWTHERM is a registered trademark of The Dow Chemical Company or an affiliated company of Dow
signalword
Warning
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
10 - Combustible liquids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
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V M Sheĭbak et al.
Gigiena i sanitariia, (4)(4), 81-82 (2008-12-23)
Experiments on rats were carried out to study the effect of dinil on the animals on chronic intake of the agent in the quantities exceeding the maximum permissible concentrations by many times. Despite few biochemical changes, there was a certain
[2 cases of acute dinil poisoning].
A N Kapustina et al.
Gigiena truda i professional'nye zabolevaniia, (3)(3), 50-51 (1983-03-01)
F O Dorgelo et al.
International archives of occupational and environmental health, 56(2), 129-134 (1985-01-01)
A study was carried out in a nylon producing plant to determine exposure to Dowtherm A from frequently occurring leaks in the heating system. The daily exposure to both diphenyl and diphenylether of 20 workers was determined over seven consecutive
Efficient synthesis of phosphorylated ortho-fused azaheterocycles
Modranka J and Janecki T
Tetrahedron, 67(49), 9595-9601 (2011)
An experimental study of small-diameter wickless heat pipes operating in the temperature range 200 C to 450 C.
Jouhara H and Robinson AJ.
Heat Transfer Engineering, 30(13), 1041-1048 (2009)
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