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Reference Data for Highly Purified Grade

Items Unit Specification Test Method
Assay
%
99.9 min.
Calculation
Color
APHA-No.
Below 5
Visual color comparison check
Water content
ppm
Below 50
Water (H2O) by Karl Fischer (volumetric analysis)
Acetone
ppm
Below 5
Gas chromatography (FID)
Acrylonitrile
ppm
Below 20
Gas chromatography (FID)
Allyl alcohol
ppm
Below 5
Gas chromatography (FID)
Propionitrile
ppm
Below 30
Gas chromatography (FID)
Hydrocyanic acid
ppm
Below 5
Silver nitrate titration (Liebig & Deniges method)
Copper
ppm
Below 5
Colorimetric determination
Iron
ppm
Below 5
Colorimetric determination
Acidity (as acetic acid)
ppm
Below 5
Neutralization titration (non-aqueous)
Free ammonia
ppm
Below 0.3
Neutralization titration
KMnO4 consumption
%
Below 25
Ultraviolet-visible spectrophotometer
UV absorbance (220 nm)
abs
Below 0.02
Ultraviolet-visible spectrophotometer
UV absorbance (210 nm)
abs
Below 0.03
Ultraviolet-visible spectrophotometer
UV absorbance (200 nm)
abs
Below 0.04
Ultraviolet-visible spectrophotometer

Notes:

The values shown here are subject to revision. Please contact Asahi Kasei Corporation to confirm the latest data before using this product.

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