Skip to content
Molekula

Molekula

Chrome Azurol S

CAS 1667-99-8 C23H13Cl2Na3O9S MW 605.28 Made to order

Chrome Azurol S is a chromogenic reagent used in analytical chemistry for detecting metal ions, particularly aluminum and iron. It forms colored complexes with these ions, enabling spectrophotometric analysis. Available in powder form with a molecular formula of C23H13Cl2Na3O9S, molecular weight of 605.28 g/mol, and stored at ambient temperatures. CAS number: 1667-99-8. Signal word: Warning. Molekula supplies Chrome Azurol S from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

CoA by batch

Overview

Chrome Azurol S is a chromogenic reagent used in analytical chemistry for detecting metal ions, particularly aluminum and iron. It forms colored complexes with these ions, enabling spectrophotometric analysis. Available in powder form with a molecular formula of C23H13Cl2Na3O9S, molecular weight of 605.28 g/mol, and stored at ambient temperatures. CAS number: 1667-99-8. Signal word: Warning. Molekula supplies Chrome Azurol S from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Specifications

Property Value
Appearance brownish black powder
Loss on Drying ≤10%
Solubility Soluble in water
Specific absorptivity 200 - 300
Absorption Max. 424 – 428 nm

Storage & handling

Property Value
Storage Temperature Ambient
Shelf Life 24 months
Acidity Acid

Identification

Property Value
CAS Number 1667-99-8
Molecular Formula C23H13Cl2Na3O9S
Molecular Weight 605.28
SMILES [Na].O=C(O)C1=CC(C=C(C1=O)C)=C(C=2C=C(C(=O)O)C(O)=C(C2)C)C=3C(Cl)=CC=C(C3Cl)S(=O)(=O)O
REACH Code Y113
TSCA Listed Yes
HTS Code 32129000
Tariff Code 3212900000

Safety & GHS

Warning
  • GHS pictogram — Explosive Explosive GHS01

Hazard statements

  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

Precautionary statements

  • P261 Avoid breathing dust/fume/gas/mist/vapours/spray
  • P280 Wear protective gloves/protective clothing/eye protection/face protection
  • P302+352 IF ON SKIN: Wash with soap and water
  • P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
  • P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

For research and industrial use only

Not for use in food, drugs, household, or in or on humans or animals. Consult the Safety Data Sheet before handling.

Documents

Certificate of Analysis (CoA) by batch

Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.

Pricing & pack sizes

Pack sizes & pricing

Pricing on request — packs available from research to bulk quantities.

Prices exclude VAT/sales tax and shipping. Bulk and custom pack sizes available on request.

Synonyms

No alternate names recorded for this product.

Frequently asked questions

FAQ being prepared for this product. Contact our team for help.

Ready to order or need a custom pack?

Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.

Talk to a chemist
Documents Pricing
Request a quote
Tell us what you need and our sales team will come back with pricing and lead times.
Full name
Email
Product
Quantity
Note