Naphthalene Sulphonate Formaldehyde
SNF
| SPECIFICATION | ||||
| Specification | ||||
| Appearance | : | Yellow Brown powder | Yellow Brown powder | Yellow Brown powder |
| PH Value | : | 6 – 8 | 7 – 9 | 7 – 9 |
| solids content (%) | : | 92% min | 92% min | 90% min |
| net starch fluidity(mm) | : | 260 min | 250 min | 240 min |
| content of cl- (%) | : | 0.3% max | 0.4% max | 0.5% max |
| Na2SO4 content (%) | : | 5% max | 10% max | 20% max |
| surface tension (N/m) | : | (71 ± 1) × 10 -3 | (71 ± 1) × 10 -3 | (71 ± 1) × 10 -3 |