GB/T 28193-2011 English PDF

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GB/T 28193-2011	150	Add to Cart	Auto, < 3 mins	Determination of chloroacetic acid (chloroacetate) contents in surfactants	Valid

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Basic data

Standard ID: GB/T 28193-2011 (GB/T28193-2011)
Description (Translated English): Determination of chloroacetic acid (chloroacetate) contents in surfactants
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G72
Classification of International Standard: 71.100.40
Word Count Estimation: 13,176
Date of Issue: 2011-12-30
Date of Implementation: 2012-09-01
Quoted Standard: GB/T 6682; GB/T 13659
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
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 the use of liquid chromatography surfactants monochloroacetic acid (salt) and dichloroacetic acid (salt) residue methods. This standard applies to an acid or a sodium chloroacetate as raw materials to produce surfactants, such as: alcohol, phenol ether carboxylates, undecylimidazoline carboxylates, fatty alkyl dimethyl betaine, fat amidopropyl dimethyl betaine such as monochloroacetic acid residues in the product (salt) and dichloroacetic acid (salt) content. When the sample is in a trichloroacetic acid (salt) and dichloroacetic acid (salt) content exceeding standard curve range, the need to increase the concentration of the standard or sample dilution or reduction measured.

GB/T 28193-2011: Determination of chloroacetic acid (chloroacetate) contents in surfactants

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Determination of chloroacetic acid (chloroacetate) contents in surfactants ICS 71.100.40 G72 National Standards of People's Republic of China Determination of surfactants chloroacetate (salt) Residues Issued on. 2011-12-30 2012-09-01 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. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee and the detergent surfactant (SAC/TC272) centralized. This standard was drafted. China Daily Chemical Industry Research Institute, Guangzhou Star Technology Development Co., Ltd., Zhejiang Chan Yu Technology Co. Shares The company, surfactants and detergent industry Productivity Promotion Center. The main drafters of this standard. Feng Yu, Yip, Huang Yaru, Yao Chen's, into Xiaojing, Xu Linshou, Xiaxiong Yan, Guan Jing Cai, Lei Xiaoying. Determination of surfactants chloroacetate (salt) Residues

1 Scope

This standard specifies the use of liquid chromatography in a surfactant acid (salt) and dichloroacetic acid (salt) method for the determination of residual amount. This standard applies to a acid or sodium chloroacetate as raw materials to produce a surfactant, such as. alcohol, phenol ether carboxylates, undecyl microphone Oxazoline carboxylates, fatty alkyl dimethyl betaines, fatty acid amide propyl dimethyl betaine and other residual products of monochloroacetic acid (salt) and dichloroacetyl Determination of acid (salt) content. When a sample is acid (salt) and dichloroacetic acid (salt) content exceeds the range of the standard curve, the need to increase Concentration of the standard or sample dilution or reduction assay.

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. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 13659 strongly acidic styrene cation exchange resin

3 liquid chromatography

3.1 Principle Using reverse phase C8 column with a 10% aqueous acetonitrile (2.0mL per 1000mL was added phosphoric acid) as the mobile phase, with UV detection Or diode array detector at a wavelength of 214nm at the detection of a residual product acid (salt) and dichloroacetic acid (salt). 3.2 Reagents 3.2.1 water, in line with GB/T 6682 requested a water. 3.2.2 a TCA, analytical content of not less than 99%. 3.2.3 dichloroacetate, analytical content of not less than 99%. 3.2.4 acetonitrile, liquid chromatography special. 3.2.5 orthophosphate, AR. 3.2.6 hydrochloric acid solution, 11 (volume fraction), whichever is analytically pure hydrochloric acid 10mL and water (3.2.1) 10mL shake mix. 3.3 Instrument Common laboratory equipment and the following. 3.3.1 liquid chromatograph. with a data processing system, equipped with an ultraviolet detector or diode array detector, the detector baseline noise in 254nm at not more than 2 × 10-5AU/s (empty tank); baseline drift at 254nm at not more than 1 × 10-3AU/h (empty pool, stable 60min). 3.3.2 Liquid Column. C8 bonded silica HPLC column, 250mm × 4.6mm (diameter), stationary phase particle size 5μm, or rather who, Applicable pH range from 1 to 8. 3.3.3 micro syringe, 25μL. 3.3.4 Analysis of balance, a sense of the amount of 0.1mg. ......

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