NEFRAS with 50/170 GOST 8505-80 (with amendments 1-3) |
| № |
Indicators |
Standard |
| 1 |
fractional composition |
|
| • initial temperature of distillation, оС, not lower |
50 |
| • 10% distils at temperature, оС, not higher |
88 |
| • 50 % distils at temperature, оС, not higher |
105 |
| • 90 % distils at temperature, оС, not higher |
145 |
| • 97,5 % distils at temperature, оС, not higher |
170 |
| • residue in the flask after distillation, %, max |
1,0 |
| 2 |
mass fraction of sulfur, %, max |
0,02 |
| 3 |
iodine value, g of iodine per 100 g of nefras, max |
1,3 |
| 4 |
content of soluble acids and alkali |
no |
| 5 |
acidity, mg КОН per 100 cm3 of nefras, max |
0,5 |
| 6 |
content of soluble gum, mg on 100 cm3 of nefras, max |
2 |
| 7 |
test on copper plate |
resistant |
| 8 |
content of mechanical impurities and water |
no |
| 9 |
test on formation of oil spot |
resistant |
|
|
