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114669

Sigma-Aldrich

4-(4-Nitrophenylazo)resorcinol

Dye content 90 %

Synonym(s):

Azoviolet, Magneson I

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25 G
€81.00
100 G
€263.00

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25 G
€81.00
100 G
€263.00

About This Item

Linear Formula:
O2NC6H4N=NC6H3-1,3-(OH)2
CAS Number:
74-39-5
Molecular Weight:
259.22
Beilstein:
674709
EC Number:
200-808-5
MDL number:
MFCD00007310
UNSPSC Code:
12171500
PubChem Substance ID:
24847188
NACRES:
NA.47

€81.00

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form

powder

Quality Level

200

composition

Dye content, 90%

mp

195-200 °C (dec.) (lit.)

λmax

432 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc(\N=N\c2ccc(cc2)[N+]([O-])=O)c(O)c1

InChI

1S/C12H9N3O4/c16-10-5-6-11(12(17)7-10)14-13-8-1-3-9(4-2-8)15(18)19/h1-7,16-17H/b14-13+

InChI key

NGPGYVQZGRJHFJ-BUHFOSPRSA-N

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Biochem/physiol Actions

4-(4-Nitrophenylazo) resorcinol, also known as azo violet or magneson I, is a red colored powder.[1] It functions as a spot test reagent and forms blue lake on reaction with Mg(OH)2 in alkaline solution. It is mainly used for determining the presence of magnesium in the solution.[2][3]
4-(4-Nitrophenylazo)resorcinol is a pH indicator.[4]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL8095
BCCJ2652
BCCF6341
BCCF6342
BCCB1662

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Kuang Lu Cheng, Keihei Ueno, Toshiaki Imamura
CRC Handbook of Organic Analytical Reagents (1992)
Cheng K L
CRC Handbook of Organic Analytical Reagents (1992)
National Research Council (U.S.). Food Protection Committee
Food Chemicals Codex (1967)
R. Gopalan
Inorganic Chemistry for Undergraduates (2009)
Highly sensitive determination method for total carbonate in water samples by flow injection analysis coupled with gas-diffusion separation.
Oshima M, et al.
Analytical Sciences, 17, 1285-1290 (2001)

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