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23647-14-5 - SPADNS - Sulfanilic acid azochromotrope - 2-(4-Sulfophenylazo)chromotropic acid trisodium salt - A16933 - Alfa Aesar

A16933 SPADNS

CAS Number
23647-14-5
Synonyms
Sulfanilic acid azochromotrope
2-(4-Sulfophenylazo)chromotropic acid trisodium salt

Size Price ($) Quantity Availability
10g 29.56
50g 102.69
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SPADNS

MDL
MFCD00003952
EINECS
245-803-9

Chemical Properties

Formula
C16H9N2Na3O11S3
Formula Weight
570.41
Melting point
>300°
Solubility
Soluble in water (10 mg/ml), and ethanol (1 mg/ml). very slightly soluble or insoluble in alcohol and organic solvents.

Applications

Sulfanilic acid azochromotrop is used as an indicator for complexometric determinations of zirconium and thorium. It is used as a reagent for drinking and wastewater analysis using Hach Method 8029, Fluoride, SPADNS Method.

Notes

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Stable under recommended storage conditions.

Literature References

JR Marier.; D Rose. The Fluoride Content of Some Foods and Beverages-a Brief Survey Using a Modified Zr-SPADNS Method. Journal of Food Science.196631 (6), 941-946.

M Greluk.; Z Hubicki. Sorption of SPADNS azo dye on polystyrene anion exchangers: equilibrium and kinetic studies. Journal of hazardous materials.2009172 (1), 289-297.

Indicator for complexometry: Z. Anal. Chem., 147, 105 (1955); 148, 349 (1955).

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Harmonized Tariff Code
2927.00
TSCA
Yes

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