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Doplňující informace

ASTM D7504-23

Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number

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NORMA vydána dne 1.5.2023

Jazyk	Anglicky
Provedení	PDF - okamžité stažení - 1 664.80 Kč PDF + redline - ihned - 1 997.70 Kč Tištěné - 1 664.80 Kč Tisk + redline - 1 997.70 Kč
Dostupnost	SKLADEM
Cena	1664.80 Kč bez DPH
1 664.80 Kč

Informace o normě:

Označení normy: ASTM D7504-23
Datum vydání normy: 1.5.2023
Kód zboží: NS-1143356
Počet stran: 14
Přibližná hmotnost: 42 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Kategorie - podobné normy:

Aromatické uhlovodíky

Anotace textu normy ASTM D7504-23 :

Keywords:

aromatics, benzene, ECN, ethylbenzene, gas chromatography, impurities, mixed xylenes, purity, o-xylene, p-xylene, styrene, toluene,, ICS Number Code 71.080.15 (Aromatic hydrocarbons)

Doplňující informace

Significance and Use

5.1?Determining the type and amount of hydrocarbon impurities remaining from the manufacture of toluene, mixed xylenes, 5.2?This method may not detect all components and there may be unknown components that would be assigned inappropriate correction factors and thus, the results may not be absolute.

1. Scope

1.1?This test method covers the determination of total nonaromatic hydrocarbons and monocyclic aromatic hydrocarbons in benzene, toluene, ethylbenzene, p-xylene, o-xylene, styrene and mixed xylenes by gas chromatography. The purity of benzene, toluene, ethylbenzene, 1.2?The limit of detection (LOD) is 0.0002 mass % and limit of quantitation (LOQ) is 0.0006 mass % for impurities in toluene, mixed xylenes, 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

E260-96(2019)	Standard Practice for Packed Column Gas Chromatography
E355-96(2021)e1	Standard Practice for Gas Chromatography Terms and Relationships (Includes all amendments and changes 4/28/2021).
E691-23	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
D5211-19	Standard Specification for Xylenes for p-Xylene Feedstock
D5917-15(2019)	Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and External Calibration
D6229-06(2018)	Standard Test Method for Trace Benzene in Hydrocarbon Solvents by Capillary Gas Chromatography
D6563-12	Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography (Withdrawn 2018)
D5135-21	Standard Test Method for Analysis of Styrene by Capillary Gas Chromatography
D5136-19	Standard Specification for High Purity p-Xylene
D1555M-22	Standard Test Method for Calculation of Volume and Weight of Industrial Aromatic Hydrocarbons and Cyclohexane [Metric]
D2360-11	Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography (Withdrawn 2016)
D3437-15(2022)	Standard Practice for Sampling and Handling Liquid Cyclic Products
D3797-05	Standard Test Method for Analysis of o-Xylene by Gas Chromatography (Withdrawn 2014)
D4492-10	Standard Test Method for Analysis of Benzene by Gas Chromatography (Withdrawn 2018)
D841-19	Standard Specification for Nitration Grade Toluene
D4790-23	Standard Terminology of Aromatic Hydrocarbons and Related Chemicals
D5060-12(2021)e1	Standard Test Method for Determining Impurities in High-Purity Ethylbenzene by Gas Chromatography (Includes all amendments and changes 2/2/2021).
E1510-95(2021)	Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
D6809-20a	Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials (Includes all amendments and changes 10/20/2020).
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E177-20	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods

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