GB/T 5474-2016 English PDF

US$114.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 5474-2016: Plastics -- Phenol formaldehyde moulding -- Determination of free ammonia and ammonium compounds -- Colorimetric comparison method
Status: Valid

GB/T 5474: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5474-2016	114	Add to Cart	3 days	Plastics -- Phenol formaldehyde moulding -- Determination of free ammonia and ammonium compounds -- Colorimetric comparison method	Valid
GB/T 5474-1985	159	Add to Cart	2 days	Phenol-formaldehyde mouldings. Determination of free ammonia and ammonium compounds. Colorimetric comparison method	Obsolete

Similar standards

GB/T 6595   GB/T 6344   GB/T 6669   GB/T 5473   GB/T 5475   

Basic data

Standard ID: GB/T 5474-2016 (GB/T5474-2016)
Description (Translated English): Plastics -- Phenol formaldehyde moulding -- Determination of free ammonia and ammonium compounds -- Colorimetric comparison method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080.01
Word Count Estimation: 6,651
Date of Issue: 2016-06-14
Date of Implementation: 2017-01-01
Older Standard (superseded by this standard): GB/T 5474-1985
Quoted Standard: ISO 565; ISO 648
Adopted Standard: ISO 120-1977, IDT
Regulation (derived from): National Standard Announcement No. 8 of 2016
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 a colorimetric method for the semi-quantitative determination of ammonia content in phenolic moldings. It is particularly important to measure the amount of ammonia in the molded article when it is necessary to consider the corrosion of the metal insert or the contamination of the food due to contact with the molded article.

GB/T 5474-2016: Plastics -- Phenol formaldehyde moulding -- Determination of free ammonia and ammonium compounds -- Colorimetric comparison method

---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.
Plastics.Phenol formaldehyde mouldings.Determination of free ammonia and ammonium compounds.Colorimetric comparison method ICS 83.080.01 G31 National Standards of People's Republic of China Replacing GB/T 5474-1985 Plastic Phenolic Molding Products Free Ammonia And the determination of ammonium compounds by colorimetric method (ISO 120. 1977, IDT) 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 5474-1985 "Determination of free ammonia and ammonium compounds in phenolic molded products by colorimetric" GB/T 5474-1985 compared to the main technical changes are as follows. --- standard name changed to "plastic phenolic molded products free ammonia and ammonium compounds determination of colorimetric method"; --- Added "preface"; --- removed the standard text "This standard is equivalent to the international standard ISO 120. 1977" plastic phenolic molding material free ammonia And the determination of ammonium compounds by colorimetric method "(see 1985 edition); - the "use of the note" was deleted (see version 4.2 of 1985); --- Added "7.1 samples" (see 7.1, 1985, Chapter 6); --- to make the appropriate changes to the formula to meet the technical conditions of our country, the specific changes are as follows. Use the formula "wa = m × D "Instead of the formula" m × D (See Chapter 8, Chapter 7 of 1985); --- Remove the standard additional instructions. This standard uses the translation method equivalent to ISO 120. 1977 "Determination of free ammonia and ammonium compounds in plastic phenolic molded products Color method ". And the normative reference in this standard international documents are consistent with the relationship between China's documents are as follows. GB/T 6005-2008 Basic dimensions of test sieve wire braid, perforated plate and electroformed sheet sieve (ISO 565..1990, MOD) GB/T 12808-1991 Laboratory glass instruments Single-line pipette (eqvISO 648..1997) This standard is proposed by the China Petroleum and Chemical Industry Association. This standard by the National Plastics Standardization Technical Committee Thermosetting Plastics Subcommittee (SAC/TC15/SC11) centralized. The drafting of this standard. Shanghai Eurasian Synthetic Materials Co., Ltd., in the blue dawn Chemical Research and Design Institute Co., Ltd., the national synthetic resin Quality Supervision and Inspection Center, Changshu Southeast Plastic Co., Ltd., Shaxian Hongsheng Plastic Co., Ltd., Shandong Shengquan Chemical Co., Ltd. The main drafters of this standard. Chen Ziling, Liu Yong, Zhao Ping, Qi Lihua, Luo Jianfeng, Wei Ying, Wang Yonggui. This standard was first published in October 1985 and this is the first revision. Plastic Phenolic Molding Products Free Ammonia And the determination of ammonium compounds by colorimetric method

1 Scope

This standard specifies the semi-quantitative determination of phenolic molded products in the ammonia content of the colorimetric method. Note. This standard does not apply to the determination of the absolute amount of ammonia. When it is necessary to consider the corrosion or food contamination of the metal insert due to contact with the molded article, the content of ammonia in the molded article is measured Is important.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. ISO 565 test sieve wire mesh, perforated plate and electroformed sheet sieve basic dimensions (Testsieves-Woven metalwireclothandpertoratedplate-Nominalsizesofapertures) ISO 648 laboratory glass instrument single standard line pipette (Laboratoryglassware-One-markpipettes)

3 principle

The free ammonia was extracted from the powder sample with hot water. The water extract is distilled in the presence of potassium permanganate and sodium hydroxide solution. Distillate with Nessler reagents and color development, the color solution and a set of standard solution one by one color.

4 reagent

In the analysis only use the recognized ammonia-free chemical pure reagent, ammonia-free distilled water or the same purity of water. 4.1 Potassium permanganate. 4.2 Sodium hydroxide. A solution with a mass fraction of 2%. 4.3 Comparison standard stock solution. 10 mg ammonia per liter. Dissolve 31.5 mg of ammonium chloride in 1000 mL of water. 4.4 Ness's reagent.

5 instruments

General laboratory instruments and the following instruments. 5.1 Equipment for making molded products into powder. 5.2 Test sieve. Sieve size 250μm, in line with ISO 565 requirements. 5.3 balance. the amount of 0.01g. 5.4 with a plug mouth glass flask. capacity 250mL. 5.5 Distillation Unit. Milled flask. capacity 250mL, splash ball and straight condenser. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 5474-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 5474-2016_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 5474-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 5474-2016_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.

Question 5: Should I purchase the latest version GB/T 5474-2016?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5474-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.