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Nitrocellulose, Grade B – Type I

Water-wetted for safe handling yet boosted to a minimum 13.35 % nitrogen, Grade B nitrocellulose bridges the gap between standard single-base powders and high-performance composite propellants. It offers heightened gas yield, crisp ignition and reliable thermal stability—ideal for magnum rifle cartridges, mortar increments and special-purpose tracers.

Why Choose Grade B?

  • Higher Energy Density – ≥ 13.35 % N raises peak pressure and velocity potential versus Grade A formulations.

  • Factory Safety-Wet (30 % H₂O) – Mass-market freight under UN 2555 / Class 4.1 with greatly reduced impact and static sensitivity.

  • Clean-Burn Chemistry – ≤ 0.4 % acetone-insoluble residue and ≤ 2.5 ml NO g⁻¹ BJ stability keep pressures consistent and fouling minimal.

  • Optimised Flow (9–15 s viscosity) – Dissolves smoothly in standard NC solvent blends for lacquer or ballistic-gel extrusion.

  • Controlled Granulation – Medium fineness (80–110 ml / 10 g) balances surface area for predictable burn and solvent uptake.

Description

Core Specifications (bullet format)

  • Raw material: wood-pulp cellulose or cotton linters

  • Nitrogen content: ≥ 13.35 %

  • Viscosity (ASTM falling-ball): 9 – 15 seconds

  • Moisture as supplied: 27 – 32 %

  • Fineness: 80 – 110 ml per 10 g (dry)

  • Acetone-insoluble matter: ≤ 0.4 %

  • Bergmann–Junk stability @ 132 °C: ≤ 2.5 ml NO g⁻¹

  • Compliance: MIL-DTL-244C, Amendment 1 (20 May 2014)

Complete Certificate of Analysis ships with every lot.

Defence-Focused Applications

  • Magnum & long-range rifle powders – higher base energy without dual-base nitroglycerine complications.

  • Mortar increment sticks & artillery bag charges – dense gas output for heavy projectiles.

  • Tracer / sub-sonic booster layers – consistent burn at lower chamber temperatures.

  • Igniters for composite rockets – rapid flame spread, low residue.

Industrial Side Uses

Though optimised for ballistics, Grade B can also formulate extra-hard nitrocellulose lacquers, fast-dry leather finishes and high-adhesion flexo inks where greater film strength is needed.

Safety & Compliance Highlights

  • Classified UN 2555 – Division 4.1 (Flammable Solid), Packing Group II.

  • Drying, blending or granulation must occur in licensed ATEX / OSHA explosives plants.

  • ISO 9001 & 45001 certified production; ITAR / BAFA export-control ready.

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