GB/T 23952-2009 English PDF

US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23952-2009: Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Distillation-acid-base titrations method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23952-2009	189	Add to Cart	3 days	Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Distillation-acid-base titrations method	Valid

Similar standards

GB/T 23948   GB/T 23940   GB/T 23947.1   GB/T 23950   GB/T 23947.3   GB/T 23944   

Basic data

Standard ID: GB/T 23952-2009 (GB/T23952-2009)
Description (Translated English): Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Distillation-acid-base titrations method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.060.01
Word Count Estimation: 8,813
Date of Issue: 2009-06-02
Date of Implementation: 2010-02-01
Quoted Standard: GB/T 6682-2008; HG/T 3696.1; HG/T 3696.3
Regulation (derived from): National Standard Approval Announcement 2009 No.8 (Total No.148)
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 total nitrogen content of inorganic chemical products (nitrate, ammonium nitrogen) generic method-distillation-acid-base titration method feeds, safety tips, general provisions, reagents, instruments, equipment, analysis steps and results of calculations. This standard applies to the determination of total nitrogen containing inorganic chemicals in. This method is applicable to inorganic chemical products constant, determination emblem half the amount of nitrogen.

GB/T 23952-2009: Inorganic chemicals for industrial use -- General method for the determination of total nitrogen content -- Distillation-acid-base titrations 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.
Inorganic chemicals for industrial use. General method for the determination of total nitrogen content. Distillation-acid-base titrations method ICS 71.060.01 G10 National Standards of People's Republic of China Inorganic chemical products for the determination of total nitrogen General Method Distillation - acid-base titration Posted 2009-06-02 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized. This standard is mainly drafted by. Fluoride Chemicals Co., Ltd., CNOOC Tianjin Chemical Research & Design Institute, Tianjin Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Shi Xiuhua, Guo Xianhui, Lusi Wei, Liu Jun, Ma. This standard is the first release. Inorganic chemical products for the determination of total nitrogen General Method Distillation - acid-base titration

1 Scope

This standard specifies the determination of total nitrogen content of inorganic chemical products (nitrate, ammonium) general distillation method --- - acid-base titration Method summary, safety tips, general provisions, reagents, instruments, equipment, analytical procedures and the results of calculations. This standard applies to the determination of total nitrogen content of inorganic chemicals in the present method is suitable for constant measurement of inorganic chemical products Semimicro nitrogen.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) Preparation of standard titration solution of HG/T 3696.1 inorganic chemical products, chemical analysis Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis

3 Method summary

In alkaline medium with N in the alloy is reduced to ammonium nitrate, ammonia by distillation distilled and absorbed in excess sulfuric acid solution in. Methyl red - methylene blue mixed indicator solution as indicator, titrated with standard sodium hydroxide solution back titration.

4 Safety Tips

Reagents used in this test method is corrosive, the operator must be careful! As splashed on the skin should immediately wash with water, Yan In severe cases should be treated immediately.

5 General Provisions

This standard reagents and water, did not indicate when the other requirements, refer to analytically pure reagents and GB/T 6682-2008 specified three Grade water. Standard Solution, formulations and product tests required in the absence of other requirements specified according to HG/T 3696.1, HG/T 3696.3 Provisions prepared.

6 Reagents

6.1 kno. Before using dried to constant mass at 100 ℃. 6.2 Nitrogen alloy (Cu. 50%, Al. 45%, Zn. 5%). particle diameter of not more than 0.85mm. 6.3 Sodium hydroxide solution. 400g/L. 6.4 sulfuric acid solution. Ba (1/2H2SO4) = 0.5mol/L or Ba (1/2H2SO4) = 1mol/L. 6.5 sodium hydroxide standard titration solution. Ba (NaOH) = 0.5mol/L. 6.6 No ammonia. 6.7 methyl red - methylene blue mixed indicator solution. 6.8 wide pH test paper. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 23952-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23952-2009_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 23952-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23952-2009_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.