p-hydroxybenzoic Acid manufacturer 99-96-7 p-hydroxybenzoic Acid supplier
Melting point 214°C -217°C Loss on drying ≤0.20% Color(Pt-Co) ≤10 Ash ≤0.20% Sulfate ≤0.10% Chl…
Loss on drying ≤0.20%
Color(Pt-Co) ≤10
Ash ≤0.20%
Sulfate ≤0.10%
Chloride ≤0.005%
Phenol ≤0.01%
Salicylic Acid ≤0.02%
4-Hydroxyisophthalic Acid ≤500ppm
Insolubles in Methanol ≤50ppm
Potassium ≤5ppm
Sodium ≤5ppm
Iron ≤5ppm
Ca2++Mg2+ ≤10ppm
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