| ≥1 piece |
Propyl p-Hydroxybenzoate
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
|
Item |
Index |
||
|
Q/SH 024-2016 |
BP |
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