
The grenade consists of a 300 cc. green or clear glass bottle filled with an inflammable liquid and sealed with an ordinary crown type cap. The bottle is fitted with an adjustable rubber harness which is used to hold a flat circular glass igniter capsule to the base.
The grenade is packed in a tubular varnished cardboard carton. The igniter capsule is well protected in the container by several layers of cardboard and sawdust.
A rip cord is pulled to open the carton. The igniter capsule is secured to the base of the bottle by the rubber harness. When the grenade is thrown forcibly against a hard target it shatters and the friction between the pieces of phosphorus causes instant ignition of the inflammable material. The viscous nature of the filling prevents undue splashing and insures adherence to the target.
Filler - 15% solution of polymethylmethacrylate in benzene, 9.5 oz (266 grams)
Igniter compound - Black phosphorus, 1 oz (28 grams)
Diameter, carton - 3.5 in (89 mm)
Diameter, bottle - 2.13 in (54 mm)
Diameter, igniter capsule - 2.13 in (54 mm)
Length, carton - 13.5 in (343 mm)
Length, bottle - 9.75 in (248 mm)
Length, igniter capsule - 0.38 in (10 mm)
Weight, complete - 44 oz (1.2 kg)
Weight, filled bottle - 26.5 oz (0.7 kg)
Weight, igniter capsule - 2 oz (56 grams)
Nothing else to see.
OP 1667, Japanese Explosive Ordnance, Volume 1 (1946)
CINCPAC-CINCPOA Bulletin 55-45, Japanese Infantry Weapons (1945)