§173.137 Class 8—Assignment of packing group.

The packing group of a Class 8 material is indicated in Column 5 of the table to §172.101 (of this subchapter). When the table to §172.101 provides more than one packing group for a Class 8 material, the packing group must be determined using data obtained from tests conducted in accordance with the OECD Guidelines for the Testing of Chemicals, Test No. 435, “In Vitro Membrane Barrier Test Method for Skin Corrosion” (IBR, see§171.7 of this subchapter); or Test No. 404, “Acute Dermal Irritation/Corrosion” (IBR, see§171.7 of this subchapter). Alternatively, a substance or mixture may be considered not corrosive to human skin for the purposes of this subchapter following testing in accordance with OECD Guideline for the Testing of Chemicals Test No. 430, “In Vitro Skin Corrosion: Transcutaneous Electrical Resistance test (TER)” (IBR, see§171.7 of this subchapter); Test No. 431, “In Vitro Skin Corrosion: Reconstructed Human Epidermis (RHE) Test Method” (IBR, see§171.7 of this subchapter); or Test No. 439, “In Vitro Skin Irritation: Reconstructed Human Epidermis Test Method” (IBR, see§171.7 of this subchapter). However, if the substance or mixture is determined to be corrosive in accordance with Test No. 430 or Test No. 439, the material may be assigned to Packing Group I, or must be further tested using Test No. 435 or Test No. 404 to determine the packaging group assignment. If the results of Test No. 431 indicate that the substance or mixture is corrosive, but the test method does not clearly distinguish between assignment of Packing Groups II and III, the material must be assigned to Packing Group II unless further testing is performed. The packing group assignment using data obtained from tests conducted in accordance with OECD Guideline Test No. 404 must be as follows: [Change Notice] [Previous Text]