518-51-4

Name PHENOLPHTHALEIN DISODIUM SALT
CAS 518-51-4
EINECS(EC#) 208-254-6
Molecular Formula C20H12Na2O4
MDL Number MFCD00051414
Molecular Weight 362.29
MOL File 518-51-4.mol
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Chemical Properties

Appearance PURPLE CRYSTALLINE POWDER
Melting point  >250°C
storage temp.  Amber Vial, Refrigerator, Under inert atmosphere
solubility  Solubility Soluble in water, ethanol
form  Powder
pka 9.1(at 25℃)
color  Dark purple to dark brown
PH Range Colorless (8.0) to pink (10.0)
λmax 553nm
Stability: Hygroscopic, Light Sensitive
Major Application Inks, fire-resistant polymers, permanent hair straightener
InChI InChI=1S/C7H16O9S3/c1-17(8,9)14-5-4-7(16-19(3,12)13)6-15-18(2,10)11/h7H,4-6H2,1-3H3
InChIKey HAWFSFZXNWBZRU-UHFFFAOYSA-L
SMILES [Na+].[Na+].[O-]c1ccc(cc1)C(=C3C=CC(=O)C=C3)c2c(cccc2)C(=O)[O-]
EPA Substance Registry System 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, disodium salt (518-51-4)

Safety Data

Risk Statements 
Safety Statements 
WGK Germany  WGK 3
TSCA  TSCA listed
HS Code  29322985
Storage Class 6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects
Hazard Classifications Carc. 1B
Muta. 2
Repr. 2
Skin Irrit. 2

Hazard Information

Spectrum Detail

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