49 CFR 178.521 - Standards for paper bags.

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There are 3 Updates appearing in the Federal Register for 49 CFR 178. View below or at eCFR (GPOAccess)
§ 178.521 Standards for paper bags.
(a) The following are identification codes for paper bags:
(1) 5M1 for a multi-wall paper bag; and
(2) 5M2 for a multi-wall water-resistant paper bag.
(b) Construction requirements for paper bags are as follows:
(1) Bags must be made of a suitable kraft paper, or of an equivalent paper with at least three plies. The strength of the paper and the construction of the bag must be appropriate to the capacity and intended use of the bag. Seams and closures must be sift-proof.
(2) Paper bags 5M2: To prevent the entry of moisture, a bag of four plies or more must be made waterproof by the use of either a water-resistant ply as one of the two outermost plies or a water-resistant barrier made of a suitable protective material between the two outermost plies. A 5M2 bag of three plies must be made waterproof by the use of a water-resistant ply as the outermost ply. When there is danger of the lading reacting with moisture, or when it is packed damp, a waterproof ply or barrier, such as double-tarred kraft paper, plastics-coated kraft paper, plastics film bonded to the inner surface of the bag, or one or more inner plastics liners, must also be placed next to the substance. Seams and closures must be waterproof.
(3) Maximum net mass: 50 kg (110 pounds).
[Amdt. 178-97, 55 FR 52717, Dec. 21, 1990, as amended at 56 FR 66285, Dec. 20, 1991; Amdt. 178-106, 59 FR 67521, Dec. 29, 1994]

Title 49 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 49.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-03-18; vol. 79 # 52 - Tuesday, March 18, 2014
    1. 79 FR 15033 - Hazardous Materials: Adoption of Certain Special Permits and Competent Authorities Into Regulations
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Pipeline and Hazardous Materials Safety Administration
      Final rule.
      This regulation is effective April 17, 2014. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of April 17, 2014.
      49 CFR Parts 107, 171, 172, 173, 175 and 178

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United States Code

Title 49 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 49 CFR 178 after this date.

  • 2014-03-18; vol. 79 # 52 - Tuesday, March 18, 2014
    1. 79 FR 15033 - Hazardous Materials: Adoption of Certain Special Permits and Competent Authorities Into Regulations
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Pipeline and Hazardous Materials Safety Administration
      Final rule.
      This regulation is effective April 17, 2014. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of April 17, 2014.
      49 CFR Parts 107, 171, 172, 173, 175 and 178