| Item | Standard | |
| Appearance | : white | |
| Assay | : 98.0% min | |
Water |
: 0.8% max | |
| Water insolubles | : 0.005% max | |
| Spirit insolubles | : NO | |
| Acrylonitrile | : 5 ppm max | |
| Acrylic acid | : 10 ppm max | |
| Colour, 20%solution | : 20 max | |
| Conductivity | : 20 μs/cm max | |
| PH | : 6.5-7.5 | |
| Copper | : 0 ppm | |
| Para-hydroxyanisole | : 3-5 ppm | |
| Fe | : 4 ppm max | |