Sample No. | Additional content of thiourea (%) | Formaldehyde content (%) | Solids content | Formaldehyde content after 30 days (%) |
L1 | 0.5 | 1.17 | 41.5 | 1.23 |
L2 | 1.0 | 1.09 | 40.7 | 1.36 |
L3 | 1.5 | 1.18 | 41.8 | 1.83 |
L4 | 2.0 | 1.12 | 44.2 | 1.30 |
L5 | 3.0 | 1.14 | 42.2 | 1.32 |