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ASTM D7266-13
Standard Test Method for Analysis of Cyclohexane by Gas Chromatography (External Standard)
Automaticky preložený názov:
Štandardná testovacia metóda pre analýzu cyklohexánu plynovou chromatografiou ( externý štandard )
NORMA vydaná dňa 1.2.2013
Informácie o norme:
Označenie normy: ASTM D7266-13
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.2.2013
Kód tovaru: NS-38032
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM D7266-13 :
Keywords:
analysis by gas chromatography, benzene, cyclohexane,
Doplňujúce informácie
| Significance and Use |
|
5.1 This test method is suitable for setting specifications on the materials referenced in Table 1 and for use as an internal quality control tool where cyclohexane is produced or is used in a manufacturing process. It may also be used in development or research work involving cyclohexane. 5.2 This test method is useful in determining the purity of cyclohexane with normal impurities present. If extremely high boiling or unusual impurities are present in the cyclohexane, this test method would not necessarily detect them and the purity calculation would be erroneous. |
| 1. Scope |
|
1.1 This test method covers the determination of the purity of cyclohexane by gas chromatography. Calibration of the gas chromatography system is done by the external standard calibration technique. 1.2 This test method has been found applicable to the measurement of impurities such as those found in C4 |
|
(1) n-butane |
|
(2) isobutene |
|
C5 |
|
(3) n-pentane |
|
(4) isopentane |
|
(5) cyclopentane |
|
C6 |
|
(6) n-hexane |
|
(7) 2-methylpentane |
|
(8) 3-methylpentane |
|
(9) methylcyclopentane |
|
(10) benzene |
|
(11) cyclohexene |
|
(12) 2,2-dimethylbutane |
|
(13) 2,3-dimethylbutane |
|
C7 |
|
(14) 3,3-dimethylpentane |
|
(15) 2,2-dimethylpentane |
|
(16) 2,3-dimethylpentane |
|
(17) 2,4-dimethylpentane |
|
(18) 1,1-dimethylcyclopentane |
|
(19) trans-1,3-dimethylcyclopentane |
|
(20) trans-1,2-dimethylcyclopentane |
|
(21) cis-1,2-dimethylcyclopentane |
|
(22) 2,2-dimethylcyclopentane |
|
(23) 2,4-dimethylcyclopentane |
|
(24) cis-1,3-dimethylcyclopentane |
|
(25) ethylcyclopentane |
|
(26) methylcyclohexane |
|
(27) 3-ethylpentane |
|
(28) 3-methylhexane |
|
(29) 2-methylhexane |
|
(30) n-heptane |
|
(31) toluene |
|
C8 |
|
(32) iso-octane |
|
(33) p-xylene |
|
C9 |
|
(34) isopropylcylohexane |
1.3 The limit of detection is 1 mg/kg.
1.4 In determining the conformance of the test results using this test method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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 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 Sampling and
Handling Liquid Cyclic Products Standard Practice for Preparation of
Liquid Blends for Use as Analytical Standards Standard Terminology of Aromatic
Hydrocarbons and Related Chemicals Standard Guide for Quality Control and
Quality Assurance Procedures for Aromatic Hydrocarbons and Related
Materials Standard Practice for Using Significant
Digits in Test Data to Determine Conformance with
Specifications
