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GB/T 30921.1-2014 English PDF

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US$299.00 · In stock
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GB/T 30921.1-2014: Test method of purified terephthalic acid (PTA) for industrial use -- Part 1: Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30921.1-2014	299	Add to Cart	3 days	Test method of purified terephthalic acid (PTA) for industrial use -- Part 1: Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)	Valid

Similar standards

GB/T 40394 GB/T 37178 GB/T 32685 GB/T 30921.4 GB/T 30921.5 GB/T 30921.3

Basic data

Standard ID: GB/T 30921.1-2014 (GB/T30921.1-2014)
Description (Translated English): Test method of purified terephthalic acid (PTA) for industrial use -- Part 1: Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G16
Classification of International Standard: 71.080.40
Word Count Estimation: 13,144
Date of Issue: 7/8/2014
Date of Implementation: 12/1/2014
Quoted Standard: GB/T 3723; GB/T 6679; GB/T 6682; GB/T 8170
Regulation (derived from): 2014 National Standards Bulletin No. 18
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 determination of industrial purified terephthalic acid (PTA) in carboxybenzaldehyde (4-CBA) and p toluic acid (p-TOL) and high performance liquid chromatography, high performance capillary electrophoresis. This standard specifi

GB/T 30921.1-2014: Test method of purified terephthalic acid (PTA) for industrial use -- Part 1: Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL)

---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.
Test method of purified terephthalic acid (PTA) for industrial use Part 1.. Determination of concentrations of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL) ICS 71.080.40 G16 National Standards of People's Republic of China Industrial purified terephthalic acid (PTA) Test Method Part 1. carboxybenzaldehyde (4-CBA) and Determination of methyl benzoate (p-TOL) Content Testmethodofpurifiedterephthalicacid (PTA) forindustrialuse- Part 1. Determinationofconcentrationsof4-carboxybenzaldehyde (4-CBA) andp-toluicacid (p-TOL) Issued on. 2014-07-08 2014-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 30921 "industrial purified terephthalic acid (PTA) Test Method" is divided into the following sections. --- Part 1. carboxybenzaldehyde (4-CBA) and the determination of methyl benzoate (p-TOL) content; --- Part 2. Determination of metal content; --- Part 3. Determination of Karl Fisher titration water content; --- Part 4. Determination of titanium content of methane antipyrine spectrophotometry; --- Part 5. Determination of acid value; --- Part 6. Determination of particle size distribution by laser diffraction method; Part --- Article 7. b * values \u200b\u200bmeasured colorimeter method. This section GB/T Part of 130,921. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by the China Petroleum and Chemical Corporation. This part of the National Standardization Technical Committee Petrochemical Chemical Technical Committee (SAC/TC63/SC4) centralized. This section drafted by. China Petroleum & Chemical Corporation Shanghai Research Institute of Petrochemical. The main drafters of this section. Pengzhen Lei, Guoyi Dan, Zhang Yuhong, Zhuang Haiqing, Wang Chuan. Industrial purified terephthalic acid (PTA) Test Method Part 1. carboxybenzaldehyde (4-CBA) and Determination of methyl benzoate (p-TOL) Content

1 Scope

This section GB/T 30921 specifies the determination of industrial purified terephthalic acid (PTA) in carboxybenzaldehyde (4-CBA) and methyl Benzoic acid (p-TOL) and high performance liquid chromatography, high performance capillary electrophoresis. This Part applies to HPLC content of 4-CBA and p-TOL at 2mg/kg and 10mg/kg or more, respectively, Determination of terephthalic acid fine specimen; HPCE apply to the content of 4-CBA and p-TOL were at 1mg/kg and 5mg kg more refined/rated terephthalic acid sample.

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, idt ISO 3165. 1976) GB/T 6679 General rules for sampling solid chemical products GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment

3 High Performance Liquid Chromatography

3.1 Principle of the method Under the conditions specified in this part, the amount of dissolved ammonia solution PTA sample is injected into high performance liquid chromatography, the use shade Ion-exchange column and acetonitrile (or methanol) - phosphate solution as the mobile phase, or the use of chemically bonded octadecyl-type columns to B Nitrile - phosphoric acid aqueous solution as mobile phase, the sample of 4-CBA and p-TOL separated, detected with UV detector and external standard method Quantified. 3.2 Reagents and materials 3.2.1 ammonium dihydrogen phosphate. AR. 3.2.2 methanol. high performance liquid chromatography (HPLC) grade. 3.2.3 acetonitrile. high performance liquid chromatography (HPLC) grade. 3.2.4 Phosphate. AR. 3.2.5 ammonia. AR. 3.2.6 Water. Water line with two GB/T 6682 stipulated. 3.2.7 phosphoric acid solution. phosphoric acid and water volume ratio 1.4 formulated as a solution. 3.2.8 ammonia solution. concentrated aqueous ammonia and water to be formulated into a solution of 1 volume ratio. 3.2.9 microporous membrane. 0.22μm. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30921.1-2014_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30921.1-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 30921.1-2014_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30921.1-2014_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.