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LC4517 Phenolphthalein
suitable for use as excipient exp Ph Eur


Order number Packaging Quantity Price €
AC31517 Plastic bottle 1 g inquire
AC31517 Double PE Sack 25 g inquire


Product information
Grade Ph Eur
Hill Formula C20H14O4
HS Code 2932 29 10
EC number 201-004-7
Molar mass 318.32 g/mol
EC index number 604-076-00-1
CAS number 77-09-8


Chemical and physical data
Solubility 0.092 g/l (20 °C)
Melting point 258 – 262 °C
Molar mass 318.32 g/mol
Density 1.30 g/cm3 (20 °C)
Bulk density 350 – 450 kg/m3


Safety information according to GHS
Hazard Statement(s) H350: May cause cancer.
H341: Suspected of causing genetic defects.
H361f: Suspected of damaging fertility.
Precautionary Statement(s) P201: Obtain special instructions before use.
P281: Use personal protective equipment as required.
P308 + P313: IF exposed or concerned: Get medical advice/attention.
Signal Word Danger
Hazard Pictogram(s)
RTECS SM8380000
Storage class 6.1A Combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Safety information
R Phrase R 45-62-68
May cause cancer.Possible risk of impaired fertility.Possible risk of irreversible effects.
S Phrase S 53-45
Avoid exposure – obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger carcinogenic, toxic for reproduction, mutagenic
Hazard Symbol Toxic


Assay (iodometric, calc. on dried substance) 98.0 – 101.0 %
– UV/VIS-Spectrum
passes test
– Colour transition passes test
Appearance of solution (40 g/l, ethanol 96 %) clear and not more intense in color than reference solution Y7
Acidity or alkalinity passes test
Chloride (Cl) ≤ 0.01 %
Sulfate (SO4) ≤ 0.02 %
Heavy metals (as Pb) ≤ 0.001 %
Related substances (TLC) ≤ 0.5 %
Related substances (HPLC)
– largest single impurity
≤ 0.10 %
– Sum of all impurities ≤ 0.3 %
Residual solvents (Ph. Eur./ICH) class 2 (Methanol) ≤ 0.3 %
Residual solvents (Ph. Eur./ICH) class 3 (Ethanol) ≤ 0.5 %
Other residual solvents (Ph. Eur./ICH) excluded by manufacutring process.
Sulfated ash (600 °C) ≤ 0.1 %
Loss on drying (105 °C) ≤ 0.5 %
Corresponds to Ph. Eur.