Petroleum crude (crude oil) GOST R 51858-2002(table 3 and 4).
4.4 On a degree of preparation petroleum subdivide into groups 1-3 (table 3).
Table 3 - Groups of petroleum
The name of a parameter
Norm for petroleum of group
Test method
1
2
3
1 Mass fraction of water, %, no more
0,5
0,5
1,0
In accordance with GOST 2477 and 9.5 this standards
2 Concentration of chloride salts, mg / dm3, no more
100
300
900
In accordance with GOST 21534 and 9.6 this standards
3 Mass fraction of mechanical impurity, %, no more
0,05
In accordance with GOST 6370
4 Pressure sated паров, kPа(mm rt. An item), no more
66,7 ( 500 )
66,7 ( 500 )
66,7 ( 500 )
In accordance with GOST 1756 and 9.8 this standards
5 Maintenance Chlorineorganic connections, one million-1 (ррт)
It is not normalized. Definition is necessary
Appendix A [6]
Прand m ечand нand е- If on one of parameters petroleum concerns to group with smaller number, and on another - to group with big number petroleum recognize to the appropriate group with big number.
4.5 On a mass fraction of hydrogen sulphide and easy меркаптановpetroleum subdivide into kinds 1-3 (table 4).
Тand лand цand 4 - Kinds of petroleum
The name of a parameter
Norm for petroleum of group
Test method
1
2
3
1 Mass fractions of hydrogen sulphide, one million-1 (ррт), no more
20
50
100
In accordance with GOST Р50802 and 9.9 this standards
2 Mass fraction methyl and etil merkin the sum, one million-1 (ррт), no more