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Significance and Use
Blocking of waxed paper, because of the relatively low temperatures at which it may occur, can be a major problem to the paper-coating industry. For example, when the waxed surfaces in a roll of waxed paper stick together, upon separation the surface films are marred and the glossy finish is destroyed. The wax picking point and the wax blocking point indicate an approximate temperature range at or above which waxed surfaces in contact with each other are likely to cause surface film injury.
1.1 This test method covers the determination of the blocking point and picking point of petroleum wax.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D87 Test Method for Melting Point of Petroleum Wax (Cooling Curve)
D938 Test Method for Congealing Point of Petroleum Waxes, Including Petrolatum
D2423 Test Method for Surface Wax on Waxed Paper or Paperboard
E1 Specification for ASTM Liquid-in-Glass Thermometers
ICS Number Code 75.140 (Waxes, bituminous materials and other petroleum products)
UNSPSC Code 12181500(Waxes)