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Key Documents

Safety Information

114499

Sigma-Aldrich

Dimethyl yellow

indicator grade

Synonym(s):

4-(Dimethylamino)azobenzene, N,N-Dimethyl-4-(phenylazo)aniline, Butter yellow, Methyl yellow

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About This Item

Linear Formula:
C6H5N=NC6H4N(CH3)2
CAS Number:
Molecular Weight:
225.29
Colour Index Number:
11020
Beilstein:
746016
EC Number:
MDL number:
UNSPSC Code:
12171500

grade

indicator grade

pH

2.9-4.0, red to yellow

mp

111 °C (dec.) (lit.)

λmax

408 nm

SMILES string

CN(C)c1ccc(cc1)N=Nc2ccccc2

InChI

1S/C14H15N3/c1-17(2)14-10-8-13(9-11-14)16-15-12-6-4-3-5-7-12/h3-11H,1-2H3

InChI key

JCYPECIVGRXBMO-UHFFFAOYSA-N

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Warning

OSHA-regulated carcinogen—see 29 CFR, Part 1910.1015

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