Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

P8903

Sigma-Aldrich

Phenolphthalin

≥92%

Synonym(s):

2-(Bis[4-hydroxyphenyl]methyl)benzoic acid

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C20H16O4
CAS Number:
81-90-3
Molecular Weight:
320.34
EC Number:
201-384-4
MDL number:
MFCD00036135
UNSPSC Code:
12171500
PubChem Substance ID:
24898992

Assay

≥92%

form

powder

SMILES string

Oc1ccc(cc1)C(c2ccc(O)cc2)c3ccccc3C(O)=O

InChI

1S/C20H16O4/c21-15-9-5-13(6-10-15)19(14-7-11-16(22)12-8-14)17-3-1-2-4-18(17)20(23)24/h1-12,19,21-22H,(H,23,24)

InChI key

FFFPYJTVNSSLBQ-UHFFFAOYSA-N

Linkage

Do not confuse with the indicator phenol-
phthalein.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
070M1370V
SLBD6136V
SLBB7308V
041M1657V
070M1370

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

James Sloots et al.
Forensic science international, 281, 141-146 (2017-11-13)
The Kastle-Meyer (KM) test is a quick and easy chemical test for blood used in forensic analyses. Two practical variations of this test are the KM-rub (indirect) test and the more sensitive KM-direct test, the latter of which is performed
Edward R Farnworth et al.
Nutrition journal, 6, 15-15 (2007-07-11)
The primary objective was to determine whether consumption of conjugated linoleic acids (CLAs) affected the fecal microbiota composition, fecal enzyme activity or fecal composition. Human subjects consumed (1 L/day) cows' milk (4% fat) containing (5 mg/g fat) cis-9, trans-11 CLA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service