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Standard Test Method for Analysis of Phenol by Capillary Gas Chromatography
Automaticky přeložený název:
Standardní zkušební metoda pro analýzu fenolu pomocí kapilární plynové chromatografie
NORMA vydána dne 1.6.2012
Označení normy: ASTM D6142-12
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2012
Kód zboží: NS-33982
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
2-methylbenzofuran, acetone, acetophenone, &alpha,-methylstyrene, cumene, gas chromatography, hydroxyacetone, mesityl oxide, phenol, sec-butyl alcohol, ICS Number Code 71.040.50 (Physicochemical methods of analysis)
Significance and Use | ||||||||||||||||
5.1 This test method is suitable for setting specifications on phenol and for use as an internal quality control tool where phenol is produced or is used in a manufacturing process. It may also be used in development or research work involving phenol. It is generally applied to determining those commonly occurring impurities such as mesityl oxide, cumene, hydroxyacetone, acetone, alpha-methylstyrene, 2-methylbenzofuran, and acetophenone. 5.2 Purity is commonly reported by subtracting the determined expected impurities from 100.00. However, a gas chromatographic analysis cannot determine absolute purity if water is present or unknown components are contained within the material being examined. |
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1. Scope | ||||||||||||||||
1.1 This test method covers the determination of known impurities in phenol by gas chromatography (GC). It is generally meant for the analysis of phenol of 99.9 % or greater purity. 1.2 This test method has been found applicable over impurity concentrations of 15 to 70 mg/kg. Users of this method believe it is linear over a wider range. 1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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.
Standard Practice for Sampling and
Handling Phenol, Cresols, and Cresylic Acid Standard Practice for Installing Fused
Silica Open Tubular Capillary Columns in Gas Chromatographs Standard Practice for Conducting an
Interlaboratory Study to Determine the Precision of a Test
Method Standard Practice for Gas Chromatography
Terms and Relationships (Includes all amendments and changes
4/28/2021). Standard Practice for Using Significant
Digits in Test Data to Determine Conformance with
Specifications Standard Guide for Quality Control and
Quality Assurance Procedures for Aromatic Hydrocarbons and Related
Materials (Includes all amendments and changes 10/20/2020). Standard Terminology of Aromatic
Hydrocarbons and Related Chemicals Standard Practice for Preparation of
Liquid Blends for Use as Analytical Standards |
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