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| Chemical Reagents |
Your current location£ºHome - Products - Chemical Reagents |
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Product Name Phenolphthalein
Identification
Synonyms 2-[Bis(4-hydroxyphenyl)methyl]benzoic acid; 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone;
3,3-Bis(4-hydroxyphenyl)phthalide
Molecular Formula C20H14O4
Molecular Weight 318.33
CAS Number 77-09-8
EINECS/ELINCS 201-004-7
Properties
Appearance white powder
Melting Point258-263ºC
Density 1.299 g/cm3
Solubility <0.1 g/100ml
Stability stable under ordinary conditions
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Items
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Specifications
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Characteristics
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White powder
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Identification
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A: Positive
B: Positive
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Appearance of Solution
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The Solution Is Clear And Not More Intensely Coloured Than Reference Solution Y7
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Melting Point
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It melts at about 260¡æ
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Related Substances
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0.5% max
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Heavy Metals
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10ppm max
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Acidity or Alkalinity
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Complies
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Chlorides
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100ppm max
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Sulphates
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200ppm max
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Loss on Drying
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0.5% max
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Sulphated ash
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0.1% max
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Assay
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98.0-101.0%(C20H14O4)
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Application
Phenolphthalein is one of the most widely used indicators. It is also used as fine chemicals.
Packing and Storage
Packing In 25kgs cardboard drum.
Storage Keep container tightly closed in a dry and well-ventilated place.
Safety Information
Non-hazardous for air, sea and road freight.
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