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S9256

Sulfanilic acid azochromotrop

≥80% purity, powder

Synonym(s):

1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)chromotropic acid trisodium salt, SPADNS

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About This Item

Empirical Formula (Hill Notation):
C16H9N2Na3O11S3
CAS Number:
23647-14-5
Molecular Weight:
570.41
NACRES:
NA.47
PubChem Substance ID:
24899830
UNSPSC Code:
12171500
EC Number:
245-803-9
MDL number:
MFCD00003952
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Product Name

Sulfanilic acid azochromotrop, ≥80%

Quality Segment

200

assay

≥80%

form

powder

composition

Carbon: 26.0-35.0%

Nitrogen: 3.6-5.9%

technique(s)

titration: suitable

color

dark red

solubility

water: 10 mg/mL

λmax

505-510 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccc(cc3)S([O-])(=O)=O)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C16H12N2O11S3.3Na/c19-12-7-11(31(24,25)26)5-8-6-13(32(27,28)29)15(16(20)14(8)12)18-17-9-1-3-10(4-2-9)30(21,22)23;;;/h1-7,19-20H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-17+;;;

InChI key

AEHGQXKBQBMQEK-GLCFPVLVSA-K

General description

Sulfanilic acid azochromotrop is commonly known as SPADNS.

Application

Sulfanilic acid azochromotrop, commonly known as SPADNS, is used mostly as an indicator for complexometric determinations of transition metals like zirconium. It is used as a reagent for drinking and wastewater analysis.

Storage Class

11 - Combustible Solids

wgk

WGK 3

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000561070
0000561077
0000561077
0000561070
0000509771

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Global Trade Item Number

SKUGTIN
S9256-50G04061835348084
S9256-25G04061836961312
S9256-10G04061836961305