Original
The company profile was verified by 
Product name: OB Acid (2, 5-Thiophenedicarboxylic Acid)
Molecule weight: 172.00
Application: Mainly usedin the production of fluorescent brightener
CAS number：4282-31-9
Package: paper board barrel weighing 25Kg
Quality standard: Q/70894543-X. 3-2005
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item
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index
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exterior
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light yellow or white powder
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Loss on drying %，≤
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0.5
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Burning residue %，≤
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0.5
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Degree of fineness
（pass 40-mesh sieve）%，≥
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95.0
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The content（HPLC）%，≥
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99.0
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