ASTM D5309-2008 Standard Specification for Cyclohexane 999《环己胺999的标准规范》.pdf
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1、Designation: D 5309 08Standard Specification forCyclohexane 9991This standard is issued under the fixed designation D 5309; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicate
2、s the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a grade of cyclohexane iden-tified as “cyclohexane 999.”1.2 The following applies to all specified limits in thisstandard: for purposes o
3、f determining conformance with thisstandard, an observed value or a calculated value shall berounded off “to the nearest unit” in the last right-hand digitused in expressing the specification limit, in accordance withthe rounding-off method of Practice E29.1.3 Consult current OSHA regulations, suppl
4、iers MaterialSafety Data Sheets, and local regulations for all materials usedin this specification.2. Referenced Documents2.1 ASTM Standards:2D 850 Test Method for Distillation of Industrial AromaticHydrocarbons and Related MaterialsD 1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scal
5、e)D 3437 Practice for Sampling and Handling Liquid CyclicProductsD 5386 Test Method for Color of Liquids Using TristimulusColorimetryD 7183 Test Method for Determination of Total Sulfur inAromatic Hydrocarbons and Related Chemicals by Ultra-violet FluorescenceD 7266 Test Method for Analysis of Cyclo
6、hexane by GasChromatography (External Standard)E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Documents:OSHA Regulations, 29 CFR, Paragraphs 1910.1000 and1910.120033. Properties3.1 Cyclohexane 999 shall conform to the following re-quiremen
7、ts:ASTM TestProperty Specification MethodPurity, min, weight % 99.90 D 7266Benzene, max, mg/kg 50 D 7266n-Hexane, max, mg/kg 200 D 7266Methylcyclohexane, max, mg/kg 200 D 7266Methylcyclopentane, max, mg/kg 150 D 7266Sulfur, max, mg/kgA1 D 7183AppearanceBColor, max, Platinum/Cobalt scale 10 D 1209 or
8、 D 5386Distillation range, 1.0 D 850including the temperature 80.7C, at101.3 KPa (760 mmHg) pressure,max, C_AIf more than one method is listed for a property and there is a dispute, thereferee method will be agreed upon between the buyer and the seller.BClear liquid free of sediment and haze at 18.3
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