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ASTM C650-04

Historical Revision

Standard Test Method for Determination of Resistance to Chemical Substances

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1.1 This test method covers a procedure for determining whether, and to what degree, ceramic tiles are affected by prolonged exposure to chemical substances that are commonly used in the household or for cleaning purposes as well as other more severe conditions.

1.2 The units used for concentration in this standard are v/v which refers to the volume of reagent/1 L of solution and g/L which refers to the weight of reagent, in g, to be dissolved in 1 L of water.

1.3 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.


This test method is intended for testing ceramic tile that are to be used for food counters, lavatories, and similar residential, medical, and commercial installations, where they may come in contact with food, chemical, and waste substances and for tile in areas where they may be exposed to contact with strong cleaning agents.

The specification of 10 % hydrochloric acid solution and 10 % potassium hydroxide solution as normal testing fluids, and the length of exposure time and temperature are based on experimental laboratory work and interlaboratory tests, where it was indicated that resistance to these two substances probably assures resistance also to any other acidic or alkaline substance coming in contact with tile, except hydrofluoric acid.

The validity of using color difference as means of determining the degree to which tile surfaces are affected by acids and alkalies has been established by interlaboratory test and was found to be more reliable than the determination of loss of gloss, particularly for unglazed tile and mat or semimat glazed surfaces. Lack of coordination between instrumental value and visual effect was noted only in the case of minute surface changes, detectable only by oblique viewing.

SDO ASTM: ASTM International
Document Number C650
Publication Date Aug. 1, 2004
Language en - English
Page Count 4
Revision Level 04
Supercedes
Committee C21.06
Publish Date Document Id Type View
June 1, 2020 C0650-20 Revision
Aug. 1, 2004 C0650-04 Revision
Jan. 1, 1997 C0650-97 Revision
Aug. 1, 2019 C0650-04R19 Reaffirmation
Dec. 1, 2014 C0650-04R14 Reaffirmation
Jan. 1, 2009 C0650-04R09 Reaffirmation