SN/T 0621: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0621-2013 | English | 319 |
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Determination of hydrocarbon in beeswax for export
| Obsolete |
SN/T 0621-2013
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| SN/T 0621-1996 | English | 239 |
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Method for the determination of hydrocarbon in beesmax for export
| Obsolete |
SN/T 0621-1996
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PDF similar to SN/T 0621-2013
Basic data | Standard ID | SN/T 0621-2013 (SN/T0621-2013) | | Description (Translated English) | Determination of hydrocarbon in beeswax for export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | B47 | | Classification of International Standard | 65.140.10 | | Word Count Estimation | 8,839 | | Older Standard (superseded by this standard) | SN/T 0621-1996 | | Quoted Standard | GB/T 8170; SN/T 1107 | | Regulation (derived from) | AQSIQ notification issued in 2013 on the first batch of 179 entry-exit inspection and quarantine of industry standards; industry standard for filing Notice 2013 No. 9 (No. 165 overall) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the export video player laser energy efficiency requirements, test methods and results of the determination. This standard applies to home laser video player, a video player including a laser device having a combination of other fe | SN/T 0621-2013: Determination of hydrocarbon in beeswax for export---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of hydrocarbon in beeswax for export
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Instead of the SN/T 0621-1996
Hydrocarbon exports beeswax test methods
Issued on. 2013-03-01
2013-09-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Instead of the standard SN/T 0621-1996 "Determination of beeswax exports of hydrocarbons."
This standard compared with SN/T 0621-1996, made editorial changes.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Hebei Exit Inspection and Quarantine.
The main drafters of this standard. EQUAL.
This standard replaces the standards previously issued as follows.
--- SN/T 0621-1996.
Hydrocarbon exports beeswax test methods
1 Scope
This standard specifies the method for determination of export beeswax hydrocarbon content.
This standard applies to the determination of export beeswax hydrocarbons. Measurement range. 14% to 40% (by mass).
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 8170 repair value expressed about the rules and limit values and judgment
SN/T 1107 inspection of export of beeswax
3 Method summary
Sample was dissolved in petroleum ether, purified by silica gel column. Beeswax esters, acids and other polar substances were adsorbed on silica gel to separate the non-polar carbon
Hydrogen compound. Weight quantification.
4 Reagents
4.1 silica gel. chromatography using 100 to 200 mesh. Before using the activation 5h ~ 6h at 125 ℃ oven, placed in a desiccator removed.
4.2 petroleum ether. AR. Boiling range 30 ℃ ~ 60 ℃ (redistilled).
Warning petroleum ether is flammable and explosive materials, the entire operation need to be carried out in a fume hood.
4.3 petroleum ether. AR. Boiling range 60 ℃ ~ 90 ℃ (redistilled).
Warning petroleum ether is flammable and explosive materials, the entire operation need to be carried out in a fume hood.
5 Equipment
5.1 Analysis of balance. a sense of the amount of 0.0001g.
5.2 temperature water bath. temperature of 100 ℃ ± 2 ℃.
5.3 thermostatic oven. temperature of 125 ℃ ± 3 ℃.
5.4 dryer. equipped with color gel.
5.5 Column. length 30cm ~ 40cm, inner diameter of 2cm, with pistons and grinding mouth sand core.
6 Sampling and sample preparation
6.1 Sampling
Press SN/T 1107 carried out.
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