Propyl Paraben
Basic Information
Product Number:SX2004
Chemical name: 4-Hydroxybenzoic acid propyl ester
Product name:Propyl 4-hydroxybenzoate
Molecular formula:C10H12O3
Molecular weight:180.20
CAS No.:94-13-3
EINECS No.: 202-307-7
Physical and chemical properties
Melting point: 95-98 °C(
Boiling point: 133°C
Density : 1.0630g/cm3
Refractivity: 1.5050
FEMA: 2951
Appearance: white crystal.
Solubility: Easily soluble in alcohol and ether, almost insoluble in water.
Relative density is (d4102) 1.0630, refractive index is (nD102)1.5050.
Detailed Description
Quality standard
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Item
|
Index
|
|
Q/SH 024-2016
|
BP
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USP
|
|
Appearance
|
/
|
Colorless crystal or white crystalline powder
|
/
|
|
Content (dry basis) % ≥
|
99.0-100.5
|
99.0-100.5
|
98.0-102.0
|
|
Melting point ℃
|
95-98
|
96-99
|
96-99
|
|
Acidity
|
/
|
Qualified
|
Qualified
|
|
Sulfate (SO42-) % ≤
|
0.024
|
/
|
/
|
|
Heavy metal (Pb) % ≤
|
0.001
|
/
|
/
|
|
Arsenic (AS) % ≤
|
0.0001
|
/
|
/
|
|
Drying loss % ≤
|
0.50
|
/
|
0.50
|
|
Residue on ignition % ≤
|
0.05
|
0.1
|
0.1
|
|
Mass fraction of free acid (PHBA)% ≤
|
0.55
|
/
|
/
|
|
Identification test
|
/
|
/
|
Qualified
|
|
Related substances
|
/
|
Qualified
|
/
|
|
Appearance
|
/
|
Clear and transparent
|
/
|
|
Organic volatile impurities
|
/
|
/
|
Qualified
|
Application
The product is mainly used as preservative of cosmetics, drugs and feeds. It is also used in feed as antiseptics.
Packing
Plastic bag, 1kg/bag, 20 bags/carton, or cardboard drum lined with plastic bag, net weight is 25kg or 50kg.
*Special requirements can be negotiated
|
Pharma Sources Insight January 2025
