SPADNS AR

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SPADNS AR Specification

Refractive Rate
for solid materials

Purity
>99%

HS Code
3204.19.00

Poisonous
No

Smell
Odorless

Ph Level
Approximately 4-6 (in aqueous solution)

Molecular Weight
452.44 g/mol

Solubility
Soluble in water

Density
Gram per cubic centimeter(g/cm3)

Other Names
SPADNS Dye SPADNS Reagent

Form
Solid

Molecular Formula
C16H10N2O10S3

Shape
Powder or fine granules

Melting Point
Decomposes before melting

Structural Formula
Complex azo compound with sulfonic acid groups attached to a naphthalene structure

Boiling point
Not applicable; this is a solid compound

Storage
Store in a cool dry place away from light and incompatible substances

Classification
Chemical Reagent

Chemical Name
SPADNS (2-(4-sulfophenylazo)-18-dihydroxy-36-naphthalenedisulfonic acid)

CAS No
20762-98-5

EINECS No
244-129-9

Grade
AR (Analytical Reagent)

Standard
ACS Grade

Type
Dye/Reagent for chemical applications

Usage
Mainly used as a spectrophotometric reagent for fluoride ion determination in water analysis

Main Material
SPADNS compound

Application
Water quality analysis laboratory research spectrophotometry

About SPADNS AR

SPADNS AR is a fine granular Analytical Reagent grade chemical reagent primarily used in water quality analysis, laboratory research, and spectrophotometry. With a molecular formula of C16H10N2O10S3 and a molecular weight of 452.44 g/mol, it is an odorless compound soluble in water. This SPADNS compound, also known as SPADNS Dye or SPADNS Reagent, is widely recognized for its purity of over 99% and its application as a spectrophotometric reagent for fluoride ion determination. Stored in a cool, dry place, this chemical is classified under dye/reagent for chemical applications, falling under the HS Code 3204.19.00 and CAS No 20762-98-5.