3 Hazardous Materials

3 Hazardous Materials

31 Definition

32 General

321 U.S. Department of Transportation

322 Postal Service

323 Mailer Responsibility

323.1 General

323.2 Service Type Codes

323.3 Extra Service Codes

323.4 Additional GS1 DotMatrix (2D) IMpb

323.5 Shipping Service File

323.6 Legacy Postage and Hard-Copy Postage Statements

323.7 USPS-Generated Shipping Labels

324 Mailability Rulings

325 DOT Hazardous Materials Warning Labels and Markings

325.1 General Requirements

325.2 Nonmailable Warning Labels and Marks

325.3 Mailable Warning Labels

325.4 Limited Quantity Markings

325.5 Excepted Quantity Labels

326 Shipping Papers

327 Transportation Requirements

327.1 General

327.2 Air Transportation Prohibitions

328 Postal Service Hazardous Materials Table

329 Presentation of Hazardous-Materials Mailings

33 Hazard Classes

331 Nine Classes

332 Limited Quantity

333 Consumer Commodity

334 USPS Limited Quantity Air Materials

335 ID8000 Materials

336 USPS Limited Quantity Surface Materials

337 Excepted Quantity

337.1 Definition

337.2 Mailability

337.3 Additional Restrictions

337.4 Quantities

337.5 Packaging and Marking

338 Small Quantity

338.1 Definition

338.2 Mailability

338.3 Additional Restrictions

338.4 Packaging and Marking

339 Packaging Requirements for Hazardous Materials

339.1 DOT Packing Groups

339.2 Postal Service Packaging Instructions

34 Mailability by Hazard Class

341 Explosives (Hazard Class 1)

341.1 Definition

341.2 Mailability, Packaging, and Marking

342 Gases (Hazard Class 2)

342.1 Definition

342.2 Mailability

342.3 Packaging

342.4 Marking and Documentation

342.5 Mailability Rulings

343 Flammable and Combustible Liquids (Hazard Class 3)

343.1 Definition

343.2 Mailability and Packaging

343.3 Marking and Documentation

344 Flammable Solids (Hazard Class 4)

344.1 Definition

344.2 Mailability

344.3 Packaging, Marking, and Documentation

345 Oxidizing Substances, Organic Peroxides (Hazard Class 5)

345.1 Definition

345.2 Mailability

345.3 Packaging, Marking, and Documentation

346 Toxic Substances and Infectious Substances (Hazard Class 6)

346.1 Definitions

346.2 Mailability

346.3 Packaging, Marking, Labeling, and Documentation

346.4 Damaged Parcels

347 Radioactive Materials (Hazard Class 7)

347.1 Definition

347.2 Mailability

347.3 Packaging

347.4 Marking

347.5 Emergency Procedures

348 Corrosives (Hazard Class 8)

348.1 Definition

348.2 Mailability

348.3 Packaging

348.4 Marking and Documentation

349 Miscellaneous Hazardous Materials (Hazard Class 9)

349.1 Definition

349.2 Mailability

349.3 Packaging

349.4 Marking and Documentation