Compound Q&A
What is Disodium 3-hydroxy-2,7-naphthalenedisulfonate (CAS: 135-51-3)?
Answer
Disodium 3-hydroxy-2,7-naphthalenedisulfonate, with the CAS number 135-51-3, is a sodium salt of 3-hydroxy-2,7-naphthalenedisulfonic acid. It is a white crystalline solid that is commonly used as a pH indicator and buffer in various chemical and industrial applications. The compound is known for its ability to change color in response to pH changes, making it useful in determining acidity or alkalinity levels.
About
CAS No
135-51-3
English Name
Disodium 3-hydroxy-2,7-naphthalenedisulfonate
Molecular Formula
C10H6Na2O7S2
Molecular Weight
348.3 g/mol
SMILES
C1=CC(=CC2=CC(=C(C=C21)O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
InChIKey
VNEBWJSWMVTSHK-UHFFFAOYSA-L
Last Updated: 2025-08-25 01:09
