This certificate of analysis from Octagon Chemicals Limited summarizes test results for a batch of Kojic Acid produced on January 22, 2019. The tests show the kojic acid meets the company's standards for identification, melting point, loss of drying, chloride, heavy metal, arsenic, ferrum, residue on ignition, and assay. It should be stored in a well-closed container at ambient temperature.

1. OCTAGON CHEMICALS LIMITED
CERTIFICATE OF ANALYSIS
TEL:0086-13071891945 FAX:0086-0535-6715688
Address: ROOM 5032,NO.9 YANAN ROAD,HANGZHOU,CHINA
sales@octagonchem.com
Page 1 of 1
Product name Kojic Acid (Cas 501-30-4)
Batch No. 190122 Mfg. date 2019.01.22
Rep. Date 2019.01.25 Exp. date 2021.01.21
Packaging 25kg/carton Batch Size 5500kg
Test Items Standards: Enterprise Results
Characters White to off-White crystalline powder
White to off-White
crystalline powder
Identification Should conform Conforms
Melting Point 152°C~156°C 154.7°C~155.0°C
Loss of Drying NMT0.5% 0.18%
Chloride NMT50ppm 25ppm
Heavy Metal NMT3ppm <0.1ppm
Arsenic NMT1ppm <0.1ppm
Ferrum NMT10ppm 7ppm
Residue on ignition NMT0.1% 0.09%
Assay NLT99.0% 99.60%
Conclusion It meets the requirements of Enterprise Standards
Storage Store in a well-closed container at ambient temperature
Prepared by: LI Reviewed by: WEI Released by:Zhang