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A3144

Sigma-Aldrich

Azomethine-H monosodium salt hydrate

~95%

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Synonym(s):
4-Hydroxy-5-(2-hydroxybenzylideneamino)-naphthalene-2,7-disulfonic acid monosodium salt hydrate, 4-Hydroxy-5-(salicylideneamino)-2,7-naphthalenedisulfonic acid monosodium salt
Empirical Formula (Hill Notation):
C17H12NNaO8S2 · xH2O
CAS Number:
206752-32-1
Molecular Weight:
445.40 (anhydrous basis)
Beilstein:
4100175
MDL number:
MFCD00149588
UNSPSC Code:
12171500
PubChem Substance ID:
24890488
NACRES:
NA.47

Assay

~95%

Quality Level

200

form

powder

solubility

1 M NaOH: 49.00-51.00 mg/mL, yellow to orange

λmax

340-344 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

O.[Na+].Oc1ccccc1\C=N\c2cc(cc3cc(cc(O)c23)S(O)(=O)=O)S([O-])(=O)=O

InChI

1S/C17H13NO8S2.Na.H2O/c19-15-4-2-1-3-10(15)9-18-14-7-12(27(21,22)23)5-11-6-13(28(24,25)26)8-16(20)17(11)14;;/h1-9,19-20H,(H,21,22,23)(H,24,25,26);;1H2/q;+1;/p-1/b18-9+;;

InChI key

AAIGDXDVSZJVSW-IFJQNBRBSA-M

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General description

Azomethine-H is used as a color development agent. It is used for the determination of boron, mainly in soil samples.

Application

Azomethine-H monosodium salt hydrate has been used for the colorimetric determination of boron in soil and plants.

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Jones JB
Laboratory Guide for Conducting Soil Tests and Plant Analysis (2001)
On-line generation and hydrolysis of methyl borate for the spectrophotometric determination of boron in soil and plants with azomethine-H.
Carrero P, et al.
Talanta, 68, 374-374 (2005)

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