4-Hydroxybenzoic acid methyl ester, 100 g
Molar mass (M) 152,15 g/mol
Density (D) 1,38 g/cm³
Boiling point (bp) 280 °C
Melting point (mp) 128 °C
CAS No. [99-76-3]
excl. VAT. | 100 g per Pack Qty.
Art. No. 3646.1
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4-Hydroxybenzoic acid methyl ester ≥98 %, Ph. Eur.
|Checked according to pharmacopoeia||Ph.Eur.|
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|Appearance||white to almost white powder|
|Appearance of solution (10 % in ethanol 96 %)||complies|
|Assay (HPLC)||98,0-102,0 %|
|Melting point||125-128 °C|
|Acidity (0,1 M NaOH/0,2 g)||complies|
|Sulphated ash||≤0,1 %|
|Related substances (p-HBA)||≤0,5 %|
|Related substances (unspecific impurities)||≤0,5 %|
|Related substances (total)||≤1,0 %|
|Volatile organic impurities||complies|
|Residual solvents (methanol)||≤0,3 %|