44570
Dowtherm® A
eutectic mixture of 26.5% diphenyl + 73.5% diphenyl oxide
Synonym(s):
Diphyl
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About This Item
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Quality Level
refractive index
n20/D 1.590
mp
12-14 °C (lit.)
SMILES string
c1ccc(cc1)-c2ccccc2.O(c3ccccc3)c4ccccc4
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
InChI key
MHCVCKDNQYMGEX-UHFFFAOYSA-N
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
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
10 - Combustible liquids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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To study injury of liver and kidney among the workers exposed to terephthalic acid(TPA), ethylene glycol(EG) and(or) dowtherm A(DOW), and research for early biological monitoring indexes. By using the method of occupational epidemiology, an investigation of industrial hygiene in a
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Our prior work on tricyclic acridones combined with a desire to minimize the tricyclic system led to an interest in antimalarial quinolones and a reexamination of endochin, an experimental antimalarial from the 1940's. In the present article, we show that
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