Chemical Name: 3,4,5-Trihydroxybenzoic acid
Chemical Structure:? 
Molecular formula: C7H6O5 Molecular weight: 170.12 CAS NO: 149-91-7
Annual Production Capacity：1200T
Specification:(Enterprise standard of China)
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quality specification |
Standard value |
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high pure grade |
Anhydrous grade |
Industrial grade |
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Appearance |
white to grey crystal powder |
White to grey crystal powder |
. |
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superior |
top |
qualified |
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Content （%） ≥ |
99.5 |
99.0 |
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99.0 |
98.5 |
98.0 |
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loss of dryness （%） ≤ |
10.0 |
0.5 |
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10.0 |
10.0 |
10.0 |
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Color (platinum cobalt color number)≤ |
120 |
180 |
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250 |
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0.1 |
0.1 |
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Residue of ignition（%） ≤ |
0.05 |
0.1 |
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clear |
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insolubility in water |
clear |
clear |
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clear |
clear |
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Tennic acid test |
clear |
clear |
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0.01 |
0.02 |
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sulfate (SO?²¯)（%）≤ |
0.005 |
0.01 |
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Chloride (Cl)（%）≤ |
0.01 |
0.01 |
0.01 |
0.02 |
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turbidity（NTU) |
5 |
10 |
10 |
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Te/（μg/g） |
5 |
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Heavy metal(Pt) ≤ |
10.0 |
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Packing：Paper drum lined plastic bag
Gross weight ：28kg Net weight：25kg
Storage：Seal and keep away from light
