Pitchy concentrate
| Parameter name | Quality standard |
| Physical form | Resinous substance of dark brown to black color |
| Acid index, mg of КОН/1g of product, not less than | 40 |
| Saponification number, mg of КОН/1g of product, not less than | 80 |
| Viscosity-density rating at 80°С, mm2/sec, no more than | 310 |
| Fraction of total mass of water, %, no more than | 0,5 |
Shelf life: 12 months