|
 |
| Ethyl 4-hydroxybenzoate |
Category: |
Intetmediates/Other intermediates |
|
Product Name: |
Ethyl 4-hydroxybenzoate |
CAS NO: |
120-47-8 |
Molecular Weight: |
166.17 |
EC NO: |
204-399-4 |
Molecular Formula: |
C9H10O3 |
Spec.: |
≥99% |
Packing: |
25 kgs/drum |
Properties: |
white crystal with slight bitter taste, easily soluble in alcohols, ether and acetone, almost insoluble in water. b.p.: 297-298℃;
Item |
Details |
GB 8850-2005 |
B.P 2000 |
USP29-NF24 |
Appearance |
/ |
colorless crystal or white crystalline powder |
/ |
Assay (dry basis) %≥ |
99.0-100.5 |
99.0-100.5 |
98.0-102.0 |
m.p.: ℃ |
115-118 |
115-118 |
115-118 |
Acidity |
/ |
qualified |
qualified |
Sulphate (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 |
Free acid (p-hydroxybenzoic acid)) mass fraction % ≤ |
0.55 |
/ |
/ |
Related substance |
/ |
qualified |
/ |
Appearance of solution |
/ |
clear transparent |
/ |
Organic volatiles |
/ |
/ |
qualified |
Qualification test |
/ |
/ |
qualified |
|
Use: |
As food preservative; also used in pharmacy and leather industries. |
Structural Formula: |
|
|
 |
|
|
|
