HMR Requirements for Inner Packagings

• Glass - These packagings must be well constructed with good quality closures that are sufficiently tight to prevent leaking and sifting. Stoppers or corks must be held in position with wire, adhesive tape, or other positive means. Any packagings with molded screw-threads must have threaded caps with a resilient liner. Glass ampoules must be heat-sealed, gas and liquid-tight.
• Plastic - These packagings must be well constructed with closures made of good quality polyethylene or other suitable plastic that are sufficiently tight to prevent leaking and sifting. Stoppers or corks must be held in position with wire, adhesive tape, or other positive means.
• Metal - These packagings must be well constructed with good quality closures that are sufficiently tight to prevent leaking and sifting. Threaded-type caps must have resilient liners completely resistant to the contents of the packagings.
• Paper bags - If using sack kraft paper or equivalent, at least two sheets of paper must be used.
• Plastic bags - These packagings must have a minimum thickness of 0.1 mm. The weld-seams and closures must be sift-proof.
• Fiber cans or boxes - These packagings must be well constructed with good quality material. The metal tops, bottoms, and connections must be of a suitable thickness.
• Aerosols - These packagings are divided into the following categories:
  • IP7 - Uniform quality steel plate or non-ferrous metal of uniform drawing quality; minimum wall thickness of 0.18 mm
  • IP7A - Uniform quality steel plate or non-ferrous metal of uniform drawing quality; minimum wall thickness of 0.20 mm
  • IP7B - Uniform quality steel plate or non-ferrous metal of uniform drawing quality; maximum capacity must not exceed 1 L
  • IP7C - Composed of approved thermoplastic materials, such as PET, PEN, nylon, or a blend; maximum capacity must not exceed 500 mL
• Metal or plastic flexible tubes - When used with organic peroxides, these packagings and their closures must not affect the thermal stability of the package.

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