GB/T 14458-2013 English PDF

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GB/T 14458-2013: Method for inspection of flower concrete
Status: Valid

GB/T 14458: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14458-2013	189	Add to Cart	3 days	Method for inspection of flower concrete	Valid
GB/T 14458-1993	199	Add to Cart	2 days	Method for inspection of flower concrete	Obsolete

Similar standards

GB/T 14455.3   GB/T 14454.7   GB/T 14455.5   GB/T 14455.1   GB/T 14457.2   GB/T 14454.11   

Basic data

Standard ID: GB/T 14458-2013 (GB/T14458-2013)
Description (Translated English): Method for inspection of flower concrete
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y41
Classification of International Standard: 71.100.60
Word Count Estimation: 8,840
Older Standard (superseded by this standard): GB/T 14458-1993
Quoted Standard: GB/T 14454.2; GB/T 14454.14
Regulation (derived from): National Standards Bulletin 2013 No. 17
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies: Inspection fragrant extract color, aroma, melting point, acid, cool Absolute value and content methods. This standard applies to: Specification with flowers made ??from petroleum ether extract extract Analysis.

GB/T 14458-2013: Method for inspection of flower concrete

---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.
Method for inspection of flower concrete ICS 71.100.60 Y41 National Standards of People's Republic of China Replacing GB/T 14458-1993 Fragrant flower extract test methods Issued on. 2013-09-06 2014-02-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 14458-1993 "fragrant flower extract test methods." Compared with GB/T 14458-1993, the main changes as follows. --- Increasing the "GB/T 14454.14 spices standard solution, test solution preparation and indicator solution," the reference (see Chapter 2, 6.1,7.1); --- Increasing the content of the test report (see Chapter 9). The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee of Fragrance Flavor and Cosmetic (SAC/TC257) centralized. This standard was drafted. Shanghai Spice Institute of Product Quality Supervision and Inspection Institute of Guangxi, Tianjin Product Quality Supervision and Testing Technology Institute. Drafters of this standard. Xu Yi, Liu Peijie, Wang Ping, Cao Yi, Mo Jialin, Zhao Fusheng. This standard was first released in June 1993, this is the first revision. Fragrant flower extract test methods

1 Scope

This standard specifies the test fragrant flower extract color, aroma, melting point, acid value, ester value and absolutes content approach. This standard applies to leaching analysis extract of flowers made of flowers with the specifications of petroleum ether.

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 14454.2 spice aroma evaluation method Preparation of GB/T 14454.14 spices standard solution, the test solution and the indicator solution

3 color test

With a diameter of about 4mm, length 60mm glass tube inserted into the vial of colorless extract is taken approximately 30mm high, observed on white background Its color. Evaluation 4 aroma According to the provisions of GB/T 14454.2 of.

5 Determination of melting point

5.1 Instrument 5.1.1 beaker. 250mL. 5.1.2 Thermometer. 30 ℃ ~ 80 ℃. Corrected and has 0.1 ℃ or 0.2 ℃ sub-scale. 5.1.3 Capillary. about 100mm, an inner diameter of 0.9mm ~ 1.1mm, wall thickness of 0.10mm ~ 0.15mm neutral hard glass Tube, open at both ends. 5.1.4 Stirrer. glass rod or stainless steel wire, one end bent into a ring, a diameter of about 40mm. Or with a magnetic stirrer. 5.2 Procedure At the lowest possible temperature (60 ℃ or less), after the sample is melted, stir across the capillary suction opening (5.1.3) in the sample In the tube height of 10mm. Below 10 ℃ or 10 ℃ placed 24h, if necessary, can be placed in an ice bath to cool more than 2h. Until completely condensate After solid, tightly tied capillary thermometer (5.1.2), the lower end portion of the capillary-like deposit mercury thermometer should be located in the middle of the ball. Thermometer and capillary immersed in a beaker filled with transmission fluid temperature of (5.1.1), the bottom of the tube from the bottom of the cup from about 20mm ~ 30mm, the tube-like portion of deposit Points at the upper level 10mm. Into the blender (5.1.4), the transmission fluid temperature continue heating and stirring, the uniform temperature rise, reaching pre ......

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