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GB/T 7378-2012 English PDF

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Q: Should I purchase the latest version GB/T 7378-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7378-2012 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.

US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7378-2012: Surface active agents -- Determination of alkalinity -- Titrimetric method
Status: Valid

GB/T 7378: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7378-2012	169	Add to Cart	3 days	Surface active agents -- Determination of alkalinity -- Titrimetric method	Valid
GB/T 7378-1996	239	Add to Cart	3 days	Surface active agents--Determination of alkalinity--Titrimetric method	Obsolete
GB 7378-1987	199	Add to Cart	2 days	Surface active agents--Determination of alkalinity--Titrimetric method	Obsolete

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Basic data

Standard ID: GB/T 7378-2012 (GB/T7378-2012)
Description (Translated English): Surface active agents -- Determination of alkalinity -- Titrimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G72
Classification of International Standard: 71.100.40
Word Count Estimation: 7,723
Older Standard (superseded by this standard): GB/T 7378-1996
Quoted Standard: GB/T 601-2002; GB/T 6372-2006; GB/T 6682-2008
Adopted Standard: ISO 4315-1977, MOD
Regulation (derived from): National Standards Bulletin No. 41 of 2012
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 surfactants, alkalinity, a common approach. This standard applies to the surfactant solution, slurry or powder of its carbonate, bicarbonate, hydroxide, the free base or an organic base such as triethanolamine

GB/T 7378-2012: Surface active agents -- Determination of alkalinity -- Titrimetric 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.
Surface active agents.Determination of alkalinity.Titrimetric method ICS 71.100.40 G72 National Standards of People's Republic of China Replace GB/T 7378-1996 Determination of alkalinity of surfactants - Titration (ISO 4315. 1977, MOD) 2012-12-31 release 2013-08-01 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 7378-1996 "Determination of alkalinity of surfactants titration", compared with GB/T 7378-1996, The main changes are as follows. --- deleted ISO preface; --- to increase the degree of adoption; - Added "terms and definitions" (see Chapter 3); - Increased "repeatability" and "reproducibility" indicators (see 9.2 and 9.3); --- Added information Appendix A. This standard uses the re-drafting method to modify ISO 4315. 1977 "Determination of alkalinity of surfactants titration". This standard has a greater structural adjustment compared to ISO 4315. 1977, and Appendix A lists the chapters of this standard and ISO 4315. 1977 A comparison of the numbers. The technical differences between this standard and ISO 4315. 1977 are as follows. --- on the normative reference documents, the standard made a technical differences in the adjustment to meet China's technical conditions, adjust the situation The situation is reflected in Chapter 2, "Normative references", as follows. Replace GB 607 (see Chapter 7) with GB/T 6372-2006 equivalent to the international standard; ● Added reference to GB/T 601-2002 (see 5.2); ● Added references to GB/T 6682-2008 (see 5.1). - Add Chapter 3 "Terms and Definitions" to explain the terms and definitions involved in this standard, in order to allow standard users to better Understand the meaning. --- increase 9.2 "repeatability" and 9.3 "reproducibility", require more stringent, more specific, more suited to our national conditions. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee (Special) Interacting Agent Subcommittee (SAC/TC63/SC8). The drafting of this standard unit. Zhejiang Realma Technology Co., Ltd. The main drafters of this standard. Tang Fuwei, Wang Yuefen, Wan Qingmei, Zeng Hongzhou. This standard replaced the previous version of the standard release. GB/T 7378-1987, GB/T 7378-1996. Determination of alkalinity of surfactants - Titration

1 Scope

This standard specifies a general method for the determination of alkalinity titration of surfactants. This standard applies to solutions, slurries or powders of surfactants, which are based on carbonates, bicarbonates, hydroxide bases or free organic bases Such as triethanolamine, in the form of these bases. This method is only applicable when specified in a specific standard for a product and does not apply to soap-containing products.

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. Preparation of standard titration solution for chemical reagents GB/T 601-2002 GB/T 6372-2006 Samples for surface active agents and detergents (ISO 607. 1980, IDT) GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696. 1987, MOD)

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Alkalinity alkalinity Refers to the surface active agent in aqueous solution due to a variety of decomposition reaction showed weak alkaline, and a certain amount of product consumption of hydrochloric acid to oxidation The mass fraction of sodium indicates the degree of alkalinity of the product.

4 principle

Some surfactants are weakly alkaline in aqueous solutions due to various decomposition reactions. With methyl orange or bromophenol blue as indicator, with hydrochloric acid Standard titration solution, and titrate the clear solution of the surfactant.

5 reagents and materials

5.1 Test water In line with GB/T 6682-2008 in the provisions of the three water requirements. 5.2 hydrochloric acid standard titration solution c (HCl) = 0.1mol/L, according to GB/T 601-2002 4.2 in the preparation and calibration. 5.3 methyl orange indicator solution 1g methyl orange indicator dissolved in 1L water, spare. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 7378-2012_English be delivered?

Answer: Upon your order, we will start to translate GB/T 7378-2012_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 7378-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7378-2012_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 7378-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7378-2012 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.