This Defence Standard specifies requirements for a type of lead stearate, Type QX, which is required to be substantially free from sodium and potassium salts, and from acetates and nitrates.

The designation ‘Type QX' indicates that the material is suitable for certain applications where a high degree of compatibility with explosives is a requirement. However, its compatibility with all explosives in all environments has not been established. Design Authorities requiring advice on particular applications should in the first instance contact the Directorate of Standardization, STAN 5, Kentigern House, 65 Brown Stree t , Glasgow, G2 8EX for guidance.

Attention is drawn to Defence Standard 13-102, Testing of Materials which are Required t o be Compatible with Explosives.