Phenolphthalien Disodium Salt

CAS Number: 518-51-4

Molecular Formula: C20H12Na2O4

Purity: Phenolphthalien Disodium Salt 95% purity

About Phenolphthalien Disodium Salt

Phenolphthalein Disodium Salt (CAS 518-51-4) is a vital pH indicator in the API intermediates market, where its high water solubility is leveraged by CDMOs for high-precision acid-base titrations and complex custom synthesis services. 3,3-Bis(4-hydroxyphenyl)phthalide disodium salt remains a staple for a bulk chemical ...

Phenolphthalien Disodium Salt Specifications

CAS Number

518-51-4

Molecular Formula

C20H12Na2O4

Molecular Weight

362.29 g/mol

IUPAC Name

disodium;2-[(4-oxidophenyl)-(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzoate

Canonical SMILES

[Na+].[Na+].[O-]c1ccc(cc1)C(=C3C=CC(=O)C=C3)c2c(cccc2)C(=O)[O-]

InChI Key

HAWFSFZXNWBZRU-UHFFFAOYSA-L

EINECS Number

208-254-6

MDL Number

MFCD00051414

HSN No

29322985

CAS Number

518-51-4

Molecular Formula

C20H12Na2O4

Molecular Weight

362.29 g/mol

IUPAC Name

disodium;2-[(4-oxidophenyl)-(4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzoate

Canonical SMILES

[Na+].[Na+].[O-]c1ccc(cc1)C(=C3C=CC(=O)C=C3)c2c(cccc2)C(=O)[O-]

InChI Key

HAWFSFZXNWBZRU-UHFFFAOYSA-L

EINECS Number

208-254-6

MDL Number

MFCD00051414

HSN No

29322985

Molecular Weight

362.29 g/mol

Purity

Phenolphthalien Disodium Salt 95% purity

Physical appearance

Red to dark blue to black powder to crystal

Boiling Point

595.8ºC at 760 mmHg

Freezing point

Flash Point

328.1 °C

Precautionary Statement Codes

P201, P202, P264, P280, P281, and P308+P313

Hazard Classes and Categories

Germ Cell Mutagenicity 2 (100%) Carcinogenicity 1B (100%)

pH Indicator

A water-soluble acid-base indicator that exhibits a clear visual transition from colorless to pink/fuchsia between pH 8.0 and 10.0, making it essential for analytical titrations and monitoring reaction kinetics

Laboratory Reagent

A versatile chemical used in biology and medicine for diagnostic assays, hematology, and histology, as well as for assessing carbonation depth in concrete and monitoring vacuum freeze-drying processes