Search result: GB/T 8570.2-2010 (GB/T 8570.2-1988 Older version)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8570.2-2010 | English | 169 |
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Determination of liquefied anhydrous ammonia -- Part 2: Estimating of ammonia content
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GB/T 8570.2-2010
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| GB/T 8570.2-1988 | English | 199 |
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Liquefied anhydrous ammonia--Estimating of ammonia content
| Obsolete |
GB/T 8570.2-1988
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| Standard ID | GB/T 8570.2-2010 (GB/T8570.2-2010) | | Description (Translated English) | Determination of liquefied anhydrous ammonia. Part 2: Estimating of ammonia content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.040.40 | | Word Count Estimation | 7,739 | | Date of Issue | 2010-09-26 | | Date of Implementation | 2011-03-01 | | Older Standard (superseded by this standard) | GB/T 8570.2-1988 | | Quoted Standard | GB/T 8570.3; GB/T 8570.4 | | Drafting Organization | National Fertilizer Quality Supervision and Inspection Center (Shanghai) | | Administrative Organization | National Standardization Technical Committee fertilizers and soil conditioners | | Regulation (derived from) | National Standard Approval Announcement 2010 No.6 (Total No.161) | | Proposing organization | China Petroleum and Chemical Industry Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the method of calculating the liquid anhydrous ammonia (ammonia) ammonia content. Warning-Use the standard laboratory personnel should be regular work experience, this standard does not indicate that all possible security problems, the user has the responsibility to take appropriate safety and health practices and to ensure compliance with the relevant conditions of national law, anhydrous liquid nitrogen highly toxic to the skin limb, mucous membranes and eyes corrosive, exposure can cause severe burns, the operation should be adequate protection. |
GB/T 8570.2-2010
Determination of liquefied anhydrous ammonia. Part 2. Estimating of ammonia content
ICS 71.040.40
G10
National Standards of People's Republic of China
Replace GB/T 8570.2-1988
Determination of liquid anhydrous ammonia
Part 2. Ammonia content
Determination ofliquefiedanhydrousammonia-
Part 2. Estimatingofammoniacontent
2010-09-26 release
2011-03-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Preface
GB/T 8570 "Determination of liquid anhydrous ammonia method" is divided into seven parts.
- Part 1. Adoption of laboratory samples;
- Part 2. Ammonia content;
- Part 3. Residue content weight method;
- Part 4. Residual content volumetric method;
- Part 5. Moisture Fisher Fischer;
- Part 6. Oil content gravimetric and infrared absorption spectroscopy;
- Part 7. Iron content - phenanthroline spectrophotometric method.
This part is part 2 of GB/T 8570.
This part of the replacement GB/T 8570.2-1988 "Determination of liquid ammonia ammonia content."
The main differences between this edition and the previous edition are.
Preparation and calibration of reagent solutions, standard titration solutions, etc. Execution of HG/T 2843 standards;
--- increase the contents of the security warning;
- standardize the standard format according to the new requirements.
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. the National Fertilizer Quality Supervision and Inspection Center (Shanghai), the Eastern Airlines Co., Ltd. Security Department.
This part of the main drafters. Feng Zhuo, Ji Min, Wu Juan, Chen Jie.
This part was first published in 1988.
Determination of liquid anhydrous ammonia
Part 2. Ammonia content
WARNING - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions of the relevant national laws. Liquid anhydrous ammonia high
Toxic to the skin, mucous membranes and eyes are corrosive, contact can cause severe burns. Operation should be properly protected.
1 Scope
This part of GB/T 8570 specifies the method for calculating the ammonia content of liquid anhydrous ammonia (liquid ammonia).
2 normative reference documents
The terms of this document are the terms of this part by reference to this part of GB/T 8570. 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.
Methods for the determination of anhydrous ammonia - Part 3. Residue content - Gravimetric method GB/T
Methods for the determination of anhydrous ammonia - Part 4. Residue content volumetric method GB/T
3 principle
Liquid ammonia ammonia content is deducted by weight or volumetric method of liquid ammonia residue content, the mass fraction of ammonia.
4 Analysis of the results of the expression
Ammonia content w1 (by weight method) and w2 (by volume method), the mass fraction of ammonia, the value in%, respectively, according to (1) and (2)
Calculate.
w1 = 100 - w3 (1)
w2 = 100 - w4 (2)
Where.
w3 --- Residual content measured by GB/T 8570.3,%;
w4 --- according to GB/T 8570.4 measured the amount of residue,%.
Where 100 minus the weight of the residue measured by the weight method is the arbitration method.
The results are expressed as two digits after the decimal point, and the arithmetic mean of the two parallel calculations is taken as the result of the measurement.
5 allow difference
The absolute difference between the parallel calculation results shall meet the requirements of Table 1.
Table 1
Ammonia mass fraction /% absolute difference /%
≥99.9 ≤0.02
< 99.9 < 0.04
......
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