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GB/T 2441.5-2010 English PDF

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Q: Should I purchase the latest version GB/T 2441.5-2010?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2441.5-2010 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$149.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 2441.5-2010: Determination of urea -- Part 5: Alkalinity -- Titrimetric method
Status: Valid

GB/T 2441.5: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 2441.5-2010	149	Add to Cart	2 days	Determination of urea -- Part 5: Alkalinity -- Titrimetric method	Valid
GB/T 2441.5-2001	199	Add to Cart	2 days	Determination of Urea Determination of alkalinity titrimetric method	Obsolete

Similar standards

GB/T 2441.8 GB/T 2441.7 GB 8569 GB/T 2441.4 GB/T 2441.6 GB/T 2441.3

Basic data

Standard ID: GB/T 2441.5-2010 (GB/T2441.5-2010)
Description (Translated English): Determination of urea -- Part 5: Alkalinity -- Titrimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G20
Classification of International Standard: 65.080
Word Count Estimation: 5,570
Date of Issue: 2010-06-30
Date of Implementation: 2011-01-01
Older Standard (superseded by this standard): GB/T 2441.5-2001
Quoted Standard: HG/T 2843
Regulation (derived from): National Standard Approval Announcement 2010 No.2 (Total No.157)
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 method for measuring the capacity of industrial urea alkalinity. This section applies inch: Determination of alkalinity levels of urea from ammonia and carbon dioxide synthesis obtained.

GB/T 2441.5-2010: Determination of urea -- Part 5: 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.
Determination of urea.Part 5. Alkalinity.Titrimetric method ICS 65.080 G20 National Standards of People's Republic of China Replacing GB/T 2441.5-2001 Determination of urea Part 5. Alkalinity volumetric method 2010-06-30 release 2011-01-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

GB/T 2441 "Determination of urea method" is divided into the following nine parts. - Part 1. total nitrogen content; - Part 2. Biuret content spectrophotometric method; - Part 3. Moisture Fisher Fischer; - Part 4. Iron content - phenanthroline spectrophotometric method; - Part 5. Alkalinity volumetric method; - Part 6. Water insoluble content weight method; - Part 7. Particle size sieving method; - Part 8. Sulfate content visual turbidimetric method; Part 9. Spectrophotometric method for methylenediourea content. This part is part 5 of GB/T 2441. This part of the GB/T 2441.5-2001 "Determination of alkalinity of urea determination of volumetric method." This section compares with GB/T 2441.5-2001 as follows. --- removed ISO preface. This section is proposed by the China Petroleum and Chemical Industry Association. This section is under the jurisdiction of the National Technical Committee on Standardization of Fertilizers and Soil Conditioners (SAC/TC105). This part of the drafting unit. National Fertilizer Quality Supervision and Inspection Center (Shanghai). This part of the main drafters. Zhang Qiuzhen, Sun Dan. This part of the previous version of the standard to replace the release of the situation. GB/T 2446-1981, GB/T 2446-1991, GB/T 2441.5-2001. Determination of urea Part 5. Alkalinity volumetric method

1 Scope

This part of GB/T 2441 specifies the determination of alkalinity in industrial urea by volumetric method. This part is applicable to the determination of urea alkalinity obtained by synthesis of ammonia and carbon dioxide.

2 normative reference documents

The terms of this document are the terms of this part by reference to this part of GB/T 2441. Any reference to the date of the text , All subsequent amendments (excluding corrigenda) or revisions do not apply to this part, however, encouragement under this section The parties to the agreement study whether the latest version of these documents can be used. For undated references, the latest edition of this document applies section. HG/T 2843 chemical analysis of chemical fertilizers commonly used standard titration solution, standard solution, reagent solution and indicator solution

3 principle

The free ammonia of the sample was titrated by titration of the solution with hydrochloric acid in the presence of the indicator liquid.

4 reagents and solutions

The reagents, solutions and water used in this section shall comply with the requirements of HG/T 2843 when not specified and formulated. 4.1 methyl red - methylene blue mixed indicator solution; 4.2 hydrochloric acid standard titration solution, c (HCl) = 0.1mol/L.

5 instruments

Usually laboratory equipment.

6 Analysis steps

Make two samples in parallel. Approximately 50 g of laboratory samples (accurate to 0.05 g) were weighed and the sample was placed in a 500 mL Erlenmeyer flask and about 350 mL of water was added. Material, add 3 to 5 drops of mixed indicator solution, and then titrated with hydrochloric acid standard titration solution to the solution was gray green.

7 Analysis of the results of the statement

The alkalinity w is expressed as the mass fraction (%) of ammonia (NH3) and is calculated as follows. w = c × V × 0.017 × 100m = c × V × 1.7m Where. c - the exact value of the concentration of hydrochloric acid standard titration solution in moles per liter (mol/L); V - the value of the volume of hydrochloric acid standard titration solution consumed in the measurement, in milliliters (mL); m - the mass of the sample, in grams (g); ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 2441.5-2010_English be delivered?

Answer: Upon your order, we will start to translate GB/T 2441.5-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 2441.5-2010_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 2441.5-2010_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 2441.5-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2441.5-2010 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.