Hazmat Class Summaries
Complete guide to hazardous materials freight classifications. Each hazmat class contains specific NMFC codes for dangerous goods requiring special handling, packaging, and documentation during LTL transportation. Browse all 15 freight classes organized by density, from Class 50 (highest density, over 50 PCF) to Class 300 (lowest density, 2-3 PCF).
Hazmat Class 50 Summary
Hazmat Class 50 represents the densest freight category for hazardous materials, containing 10 NMFC codes. This class includes high-density items such as calcium-silicon compounds, pulverized rubber scrap, fertilizer materials, and bone meal products. These materials typically weigh 50+ pounds per cubic foot and require proper packaging in bags, boxes, drums, or packages for safe LTL freight transportation.
Hazmat Class 55 Summary
Hazmat Class 55 encompasses 12 hazardous material NMFC codes with density ranges of 35-50 lbs/cu ft. This freight classification includes various chemicals, compounds, and industrial materials that require specialized handling and documentation for compliant shipping.
Hazmat Class 60 Summary
Hazmat Class 60 contains 12 NMFC codes for hazardous materials with densities between 30-35 lbs/cu ft. These materials include chemicals, compounds, and other dangerous goods requiring proper freight classification and carrier notification.
Hazmat Class 65 Summary
Hazmat Class 65 includes 8 hazardous material NMFC codes representing freight with density of 22.5-30 lbs/cu ft. This class covers various chemical compounds and industrial materials requiring DOT compliance and proper packaging.
Hazmat Class 70 Summary
Hazmat Class 70 is the largest category with 24 NMFC codes for hazardous materials, covering density ranges of 15-22.5 lbs/cu ft. This extensive classification includes diverse chemical compounds, industrial materials, and dangerous goods requiring comprehensive safety protocols.
Hazmat Class 77.5 Summary
Hazmat Class 77.5 contains 8 hazardous material NMFC codes with density of 13.5-15 lbs/cu ft. This mid-range class includes various chemicals and compounds requiring standard hazmat shipping procedures.
Hazmat Class 85 Summary
Hazmat Class 85 encompasses 14 NMFC codes for hazardous materials with density of 12-13.5 lbs/cu ft. This class includes chemicals, compounds, and other dangerous goods requiring proper freight classification and handling.
Hazmat Class 92.5 Summary
Hazmat Class 92.5 contains 2 hazardous material NMFC codes representing freight with density of 10.5-12 lbs/cu ft. Though limited in scope, these materials require full hazmat compliance and proper documentation.
Hazmat Class 100 Summary
Hazmat Class 100 includes 17 NMFC codes for hazardous materials with density of 9-10.5 lbs/cu ft. This substantial class covers various chemical compounds and industrial materials requiring standard dangerous goods protocols.
Hazmat Class 110 Summary
Hazmat Class 110 contains 3 hazardous material NMFC codes with density of 8-9 lbs/cu ft. These materials require proper hazmat classification and carrier notification for safe freight transportation.
Hazmat Class 125 Summary
Hazmat Class 125 includes 1 hazardous material NMFC code representing freight with density of 7-8 lbs/cu ft. Despite its single entry, this classification requires full DOT compliance and proper packaging specifications.
Hazmat Class 150 Summary
Hazmat Class 150 contains 6 NMFC codes for hazardous materials with density of 6-7 lbs/cu ft. This class includes lighter-weight dangerous goods requiring appropriate freight classification and handling procedures.
Hazmat Class 200 Summary
Hazmat Class 200 includes 3 hazardous material NMFC codes with density of 4-5 lbs/cu ft. These lower-density materials still require comprehensive hazmat documentation and proper shipping protocols.
Hazmat Class 250 Summary
Hazmat Class 250 contains 2 NMFC codes for hazardous materials representing freight with density of 3-4 lbs/cu ft. These lighter materials require full hazmat compliance despite their lower weight-to-volume ratio.
Hazmat Class 300 Summary
Hazmat Class 300 includes 1 hazardous material NMFC code with density of 2-3 lbs/cu ft. This lowest-density hazmat classification still requires complete DOT compliance, proper packaging, and carrier notification.
Understanding Hazmat Freight Classes
Hazardous materials (hazmat) freight classes are specialized NMFC classifications for dangerous goods requiring special handling during transportation. Each class is determined primarily by the density of the packaged freight, measured in pounds per cubic foot (PCF).
Why Hazmat Classifications Matter
- Safety Compliance: Ensures proper handling and storage of dangerous goods
- Accurate Pricing: Determines freight rates based on density and risk
- Legal Requirements: Meets DOT and NMFTA regulatory standards
- Carrier Acceptance: Helps carriers properly assess and accept shipments
Key Density Ranges
Freight classes range from Class 50 (highest density, over 50 PCF) to Class 300 (lowest density, 2-3 PCF). Higher density typically means lower freight rates, while lower density items cost more to ship per pound.