National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Test for Screening Asbestos.

PB80198385

Publication Date	1979
Personal Author	Kim, W. S.; Carter, J. W.; Kupel, R. E.
Page Count	10
Abstract	A colorimetric test was developed to detect the presence of asbestos (1332214) in bulk samples by the formation of color complexes from added magnesium (II) (Mg) and iron (II) (Fe). In the magnesium test, several drops of Mg reagent are added directly to the sample, which is washed with glycerine and mixed with phosphoric acid and sodium hydroxide. A blue color indicates that chrysotile (12001295) may be present. In the iron test, several drops of Fe reagent are added to the sample, which is washed with an acetic and sulfuric acid mixture. Each acid then is added separately, and hydrofluoric acid also is added. A red color indicates the possible presence of amosite (12172735) or crocidolite (12001284). If both tests give a negative response, the probability is low that asbestos is present. If the presence of Mg or Fe is indicated, further analysis to confirm, identify, and quantitate the asbestos is required.
Keywords	Asbestos Colorimetric test Chemical tests Optical tests Screening Detection Serpentine Chemical analysis CAS 1332-21-4 Analytical methods CAS 12001-29-5 Amosite CAS 12172-73-5 CAS 12001-28-4
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	99A - Analytical Chemistry
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Physical Sciences and Engineering.
Document Type	Technical Report
NTIS Issue Number	198021

Test for Screening Asbestos.

Test for Screening Asbestos.
PB80198385

Publication Date	1979
Personal Author	Kim, W. S.; Carter, J. W.; Kupel, R. E.
Page Count	10
Abstract	A colorimetric test was developed to detect the presence of asbestos (1332214) in bulk samples by the formation of color complexes from added magnesium (II) (Mg) and iron (II) (Fe). In the magnesium test, several drops of Mg reagent are added directly to the sample, which is washed with glycerine and mixed with phosphoric acid and sodium hydroxide. A blue color indicates that chrysotile (12001295) may be present. In the iron test, several drops of Fe reagent are added to the sample, which is washed with an acetic and sulfuric acid mixture. Each acid then is added separately, and hydrofluoric acid also is added. A red color indicates the possible presence of amosite (12172735) or crocidolite (12001284). If both tests give a negative response, the probability is low that asbestos is present. If the presence of Mg or Fe is indicated, further analysis to confirm, identify, and quantitate the asbestos is required.
Keywords	Asbestos Colorimetric test Chemical tests Optical tests Screening Detection Serpentine Chemical analysis CAS 1332-21-4 Analytical methods CAS 12001-29-5 Amosite CAS 12172-73-5 CAS 12001-28-4
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	99A - Analytical Chemistry
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Physical Sciences and Engineering.
Document Type	Technical Report
NTIS Issue Number	198021