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Phenolphtalein Indicator in Ethanol/Water, 10g/L, Chem-Lab

Catalog Number 11963333
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Quantity:
1 L
Packaging:
Polyethylene
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This item is not returnable. View return policy

Description

Turns red-violent in the presence of bases. Phenolphtalein Indicator in Ethanol/Water, 10g/L, Chem-Lab contains 10g C20H14O4 per 1L C2H5OH and H2O (1:1). It is used as an indicator in acid-base titrations for AFNOR determination in water.

Phenolphthalein is usually dissolved in alcohol for use in experiments. It is a weak acid, which can lose H+ ions in solution. The phenolphthalein molecule is colorless, while the phenolphthalein ion is pink. In acidic and neutral solutions, the solution is colorless. When a base is added to the phenolphthalein, more ionization takes place, causing the solution to turn a red-violet color.
Melting Point -114°C
CAS 77-09-8, 64-17-5, 7732-18-5
Concentration 10g C20H14O4 per 1L C2H5OH and H2O (1:1)
Molecular Formula C20H14O4
MDL Number MFCD00005913
Solubility Information Slightly soluble in water
InChI Key KJFMBFZCATUALV-UHFFFAOYSA-N
SMILES OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1
IUPAC Name 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
Molecular Weight (g/mol) 318.33
PubChem CID 4764
ChEBI CHEBI:34914
Formula Weight 46.07g/mol
Grade AFNOR
Odor Alcoholic
Packaging Polyethylene
Density 0.89g/mL
pH Color Changes Colorless to red-violet
Solvent or Matrix Ethanol:Water (1:1)
Quantity 1 L
Physical Form Liquid
Chemical Name or Material Phenolphtalein
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Safety and Handling

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Product Identifier
  • Phenolphtalein 10 g/l in ethanol/water (1/1) indicator solution
 Signal Word
  • Danger
 Hazard Category
  • Carcinogenicity Category 2
  • Flammable liquid Category 2
  • Germ cell mutagenicity Category 2
 Hazard Statement
  • H225-Highly flammable liquid and vapour.
  • H341-Suspected of causing genetic defects.
  • H350-May cause cancer.
 Precautionary Statement
  • P201-Obtain special instructions before use.
  • P280-Wear protective gloves/protective clothing/eye protection/face protection.
  • P308+P313-IF exposed or concerned: Get medical advice/attention.
 Supplemental information
  • MIXTURE LIST-Contains : phenolphtalein indicator, ethanol
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