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SN/T 2996-2011: Test method for distillation range of volatile organic liquids
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SN/T 2996-2011: Test method for distillation range of volatile organic liquids

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Test method for distillation range of volatile organic liquids People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of Distillation Range of Volatile Organic Liquids Issued on. 2011-09-09 2012-04-01 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. This standard uses redrafted Law Revision using American Society for Testing Materials Standards ASTMD1078-05 "Distillation Range of Volatile Organic Liquids Standard Test Method. " The standard numbering ASTMD1078-05 reg reg number table in Appendix A. No technical differences between this standard and ASTMD1078-05 compared. This standard mainly to do the following editorial changes. --- You will be prompted on security issues on the text of the first; --- Chapter 2 Normative references according to GB/T 1.1-2009 requirements, and will be changed to the standard of the corresponding section references National standards; increased standards for chemical sampling of GB/T 3723 and GB/T 6680 and so on; --- For ease of use, the referenced standard ASTME133 Instrument maps specific content directly included in the text, and in Table 2 Increasing the applicable grade thermometer; --- According to testing needs, to increase the "barometer 5.6" clause; --- The barometric pressure units in terms of SI units kPa; --- Narrative precision by GB/T 20001.4-2001 standard requirements were modified; --- Remove the irrelevant content and technical requirements (chapter number 1.3,1.4,1.5,13.2,14). This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China, Ningbo Entry-People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Wu bud, Ren Fei, Lin Zhenxing, Wang Hao, Xi Zhongwei, Wang Haibo, fees Xudong, Cheng Shigang. Determination of Distillation Range of Volatile Organic Liquids WARNING --- This standard does not mention the use of the same standard for all security issues. Users are responsible before the application of this standard, to take Appropriate safety and health practices and to ensure compliance with relevant laws and regulations. Specific hazard statements, see Chapter 6.

1 Scope

This standard specifies the methods and requirements of volatile organic liquid distillation range measured. This standard applies to boiling ranges at 30 ℃ ~ 350 ℃, and chemically stable during the distillation of hydrocarbons, oxygen-containing compounds, Chemical intermediates and mixtures thereof, and other organic liquids.

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 3723 Sampling of chemical products for industrial use General Safety (GB/T 3723-1999, idtISO 3165. 1976) GB/T 6536 Petroleum products - Determination of distillation characteristics at atmospheric pressure (GB/T 6536-2010, ASTMD86-07a, MOD) GB/T 6680 General rules for sampling liquid chemical products ASTME1 ASTM submerged glass thermometers ASTME133 distillation equipment specification

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 IBP initialboilingpoint Drip from the end of the first drop of condensate condenser moment observed thermometer readings. 3.2 Dry point drypoint The last drop of liquid distillation flask lowest point of the observed evaporation instant thermometer readings, without regard to any distillation flask wall liquid. 3.3 Decomposition point decompositionpoint Distillation flask liquid thermometer readings thermal decomposition occurs when the initial signs. 3.4 FBP finalboilingpoint The highest reading obtained during the test thermometer. Note. The final boiling point is usually only appears after all of the liquid at the bottom of the distillation flask evaporates, often referred to as the maximum temperature. 3.5 The end of five minutes endpoint5minutes As guiltless point or end point occurred after the 95% distillation point when the thermometer reading 5min. ...