NMFC 12790 - Calcium-Silicon in Boxes | Class 50

To find the correct freight class for your shipment:

1. List on the BOL: “Calcium-silicon, NMFC 12790, Class 50, Boxes,” plus weight, piece count, and a 24/7 emergency contact number.
2. Use UN-rated corrugated boxes with a moisture barrier liner; keep product sealed and palletize tight with stretch wrap and corner protection.
3. Load away from liquids, acids, and oxidizers; keep dry van doors closed during rain and add “Keep Dry” and “Hazmat” handling labels.
4. Attach the current SDS and verify the carrier’s hazmat authorization; apply required placards if quantity thresholds trigger placarding.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Fixed Class 50 helps secure lower LTL base rates for dense alloy shipments.
• One NMFC code (12790) simplifies quoting, routing, and audits for foundries and steel mills.
• Accurate hazmat paperwork and labeling prevent reclassification fees, fines, and service delays.
• Dry, durable box packaging reduces damage claims and protects melt chemistry consistency.