Certificate of Analysis

Shanghai THINFILM Bio-Technology Co. LTD.,

Room 448, No.1 Building, 351 Guoshoujing Road,

Shanghai, P.R. China

Postal Code: 201203

Report Date

Mar. 14 2012

Certificate No.

20120018

Page 1 0f 1

Product Name

Ethylcellulose Aqueous Dispersion

Lot No.

20120301

Lot/Qty.

50

Packed

25Kg PE Jerrican

Total

50

Production date

Mar. 12 2012

Expiry date

Sep.11 2013

Test parameter

Requirements

Results

Appearance

White and milky dispersion

Conforms

Identification

1.IR absorption should conform

2.Film forming test should conform

3.Hexadecanol should conform

4.SLS should conform

Conforms

Viscosity

≤ 150

10.6

Sediment volume

≥ 0.97

0.98

pH value

4.0-7.0

6.78

Loss on drying

≤ 71%

69.5%

Heavy metals

≤ 0.001%

≤ 0.001%

Methylene Chloride

＜0.06%

0.05%

Ethylcellulose

24.3-29.7%

26.8%

Microbiological Limits

Aerobic bacteria

Max:1000

＜10

Yeast and mold

Max:100

＜10

Escherichia Coli

Absent

ND