|
ASCORBIC ACID (C6H8C6)
EP/BP/USP/DAB/FCC
- Batch No. DY/00189 Manufacture
Date Dec 2007
- Quantity 3000 kgs (120
drums) Expiry Date Dec 2011
|
Testing
|
Units
|
Export
standards
|
CP2000CP2000
|
FCC4FCC4
|
|
Characteristics
|
|
White
crystalline powder
|
White
crystalline powder
|
White
crystalline powder
|
|
Identification
|
|
There
was a positive reaction
|
There
was a positive reaction
|
There
was a positive reaction
|
|
Content
|
%
|
99.0~100.0
|
≥
99.0
|
99.0~100.5
|
|
（pH）Acidity
(pH)
|
|
2.2~2.5
|
--
|
--
|
|
A420nmA
420
color solution
|
|
≤0.01
|
≤
0.03
|
--
|
|
Solution
clarity
|
|
≤
half
of its 0.5 turbidity standard solution
|
No.
≤ 0.5 turbidity standard solution
|
--
|
|
Heavy
Metal
|
%
|
≤
0.0003
|
≤
0.001
|
≤
0.001
|
|
Copper
|
%
|
≤
0.0005
|
≤
0.0005
|
--
|
|
Rail
|
%
|
≤
0.0002
|
≤
0.0002
|
--
|
|
Rotation
|
°
|
+20.5~+21.5
|
+20.5~+21.5
|
+20.5~+21.5
|
|
Melting
point (melting while decomposition)
|
℃
|
191~192
|
190~192
|
--
|
|
Residua
on
Ignition
|
%
|
≤
0.1
|
≤
0.1
|
≤
0.1
|
|
Oxalate
|
%
|
≤
0.2
|
--
|
--
|
|
Color
Solution
|
|
≤
BY 7
|
--
|
--
|
|
A420nmA
value of 420
Baking extinction
|
|
≤
0.020
|
--
|
--
|
|
80m
above the current 40 Fineness
|
|
≤
30
≥
45
|
--
|
--
|
|
Volatile
organic impurities
|
|
Compliance
|
--
|
--
|
|
Mao
points
|
|
≤
3 /3g
|
--
|
--
|
|
