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Merck
CN

44570

Dowtherm® A

eutectic mixture of 26.5% diphenyl + 73.5% diphenyl oxide

Synonym(s):

Diphyl

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About This Item

NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352100
MDL number:
Technical Service
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Quality Level

refractive index

n20/D 1.590

functional group

phenoxy, phenyl

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


signalword

Danger

target_organs

Respiratory system

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2 - STOT SE 3

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



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Efficient synthesis of phosphorylated ortho-fused azaheterocycles
Modranka J and Janecki T
Tetrahedron, 67(49), 9595-9601 (2011)
[2 cases of acute dinil poisoning].
A N Kapustina et al.
Gigiena truda i professional'nye zabolevaniia, (3)(3), 50-51 (1983-03-01)
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



Global Trade Item Number

SKUGTIN
44570-1L04061832283999