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HNS

Abbreviation for Hexanitrostilbene, also called Hexanitrodiphenylethylene.

A heat resistant explosive, commonly used in deep well charges found in the oil field or in applications requiring the explosive to withstand significant temperatures before initiation. C6H2(NO2)3.

Molecular weight 450.24, nitrogen content 18.67% melting point 316 °C; detonating velocity 7000 m/s at density of 1.7 g/cc. Made in type I and type II and grades A and B. Difference between type I and type II is primarily the particle size.

HNS has a unique small diameter of 0.020 It is relatively insensitive to heat, spark, impact and friction, yet it finds wide use as a heat resistant booster charge for military applications.

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