Methods of chemical analysis of antimony (Revised)
2
IS 1387: 1993
General requirements for the supply of metallurgical materials (Second Revision)
3
IS 1817: 1961
Methods of sampling non - Ferrous metals for chemical analysis
Sl.No.
Synosis Points
1
a) The scope has been modified to cover refined antimony manufactured irrespective of
source that is either from primary or secondary sources by any smelting and refining
process as per international practices;
b) A separate clause 3 on terminology has been added;
c) Clause 5 has been modified to include basis for order/enquiry;
d) Clause 6 on manufacture has been modified to cover ingots produced from recycled
materials;
a) Clause 7 on chemical composition has been modified, the maximum limit of sulphur
percent reduced to 0.10 in grade Sn 99.50;
e) Clause 8 on freedom from defects has been modified.f) Clause 9 on mass has been modified, introduced the shape of the ingot.
g) Clause 10 on sampling has been modified to introduce the definition of lot and new
method of sampling for chemical analysis.
h) Clause on BIS Certification Marking has been added.
2
In this standard assistance has been derived from ASTM B237 :2020 Standard Specification for Refined Antimony.In line with ASTM, the scope now covers the requirements of refined antimony produced by any smelting and refining process from ore or recycled materials to meet the chemical requirements of this specification which earlier specified from ore only. The Sulphur content of Grade99.50 has been made in line with ASTM B237 and has been reduced from 0.15 to 0.10 percent. The sampling clause has also been modified in line with ASTM.