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SN/T 0736.2-2011: Test method of import and export fertilizers. Part 2: Determination of moisture
Status: Valid SN/T 0736.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0736.2-2011 | English | 189 |
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Test method of import and export fertilizers. Part 2: Determination of moisture
| Valid |
SN/T 0736.2-2011
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| SN/T 0736.2-1997 | English | 239 |
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Method of inspection for import and export fertilizers. Determination of moisture
| Obsolete |
SN/T 0736.2-1997
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PDF similar to SN/T 0736.2-2011
Basic data | Standard ID | SN/T 0736.2-2011 (SN/T0736.2-2011) | | Description (Translated English) | Test method of import and export fertilizers. Part 2: Determination of moisture | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | G20 | | Word Count Estimation | 7,791 | | Date of Issue | 2011-09-30 | | Date of Implementation | 2012-04-01 | | Older Standard (superseded by this standard) | SN/T 0736.2-1997 | | Quoted Standard | GB/T 601; GB/T 6283; SN/T 0736.1 | | Regulation (derived from) | National-Quality-Inspection-accreditation (2011) 492; Industry Standard Filing Announcement 2012 No.4 (Total No.148) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the oven drying method, import and export of fertilizers method for the determination of moisture in the desiccant vacuum drying method and the Karl Fischer method, vacuum oven dry drill rules. This section applies to a method of drying oven side fixed and stable performance without crystal water chemical fertilizers, such as potash (potassium, KCl, potassium nitrate), nitrogen (ammonium and nitrate, chlorinated press) and part of the phosphate (weight over monument calcium) and other measured moisture content. The second part of the method in a vacuum oven dry drill rules applicable to the determination of the thermal properties of unstable chemical fertilizers, such as urea, compound fertilizer, determination of nitrate nitrogen and lime its moisture content. The three- part approach to heat unstable performance measurement for chemical fertilizers desiccant vacuum drying method, such as hydrogen phosphate and hydrogen measured moisture content, This section applies to the four methods used dioxane extract fertilizer free water, after by Karl Fischer titration reagents speed. Determination of water content of fertilizers. | SN/T 0736.2-2011: Test method of import and export fertilizers. Part 2: Determination of moisture---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.
Test method of import and export fertilizers.Part 2. Determination of moisture
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Instead of the SN/T 0736.2-1997
Importers and fertilizer testing methods
Part 2. Determination of moisture content
Part 2. Determinationofmoisture
Issued on. 2011-09-09
2012-04-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This section drafted in accordance with GB/T 1.1-2009 requirements given.
SN/T 0736 "Importers fertilizer test methods" standard series is divided into 14 parts.
--- Part 1. sampling and sample preparation;
--- Part 2. Determination of moisture;
--- Part 3. Determination of particle size;
--- Part 4. Flame atomic absorption spectrometric method for the determination of sodium content;
--- Part 5. Determination of nitrogen content;
--- Part 6. Determination of phosphorus;
--- Part 7. Determination of potassium content;
--- Part 8. Determination of shrinkage diurea content;
--- Part 9. Determination of chlorine content;
--- Part 10. Determination of the free acid;
--- Part 11. automatic analyzer nitrogen content;
--- Part 12. Determination of Arsenic, chromium, cadmium, mercury, lead by inductively coupled plasma mass spectrometry;
--- Part 13. Flame atomic absorption spectrometric method for the determination of copper, zinc, iron, manganese, magnesium, cobalt, nickel content;
--- Part 14. Determination of Inorganic anions by ion chromatography.
This is Part 2 SN/T 0736 "Importers fertilizer test methods" series of standards.
The partial replacement of SN/T 0736.2-1997 "Importers fertilizer test method Determination of moisture."
This section 0736.2-1997 compared with SN/T , the main differences.
--- This standard GB/T 1.1 "Standardization Guide Part 1. Standard structure and writing rules" and GB/T 20001.4-
2001 "Rules for drafting standards - Part 4. Chemical analysis methods," the provisions of the original SN/T 0736.2-1997 is formatted
The specification of the changes and additions;
--- This section increases the Karl Fischer method in the method.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section was drafted by. People's Republic of China Shanghai Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this section. Tu Hong, Cai Jing, Li Chen.
This part of the standard replaces the previous editions are.
--- SN/T 0736.2-1997.
Importers and fertilizer testing methods
Part 2. Determination of moisture content
1 Scope
This section provides an oven drying, vacuum oven drying, drying vacuum drying method and Karl Fischer method for the determination of the import and export of fertilizers
Methods of moisture.
This section applies to a method of oven drying method for the determination of stable performance, non-crystalline water chemical fertilizers, such as potash (potassium sulfate, potassium chloride, nitrate
Potassium), nitrogen (ammonium sulfate and sodium nitrate, ammonium chloride) and a portion of phosphorus (superphosphate) and other measuring moisture content;
This part of the second method applicable to the determination of the thermal performance is not stable chemical fertilizers in a vacuum oven drying method, such as urea, compound fertilizer, ammonium nitrate
Determination of lime nitrogen and moisture content;
This section Method three measuring thermal properties of highly unstable chemical fertilizers vacuum drying method for drying agent, such as ammonium hydrogen phosphate measured water
CONTENT;
Method IV This section applies to extraction with dioxane fertilizer free water, followed by Karl Fischer reagent titration method, determination of fat
Free water content of the feed.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Preparation of GB/T 601 chemical reagent standard titration solution
GB/T 6283 Water Chemical Products Karl Fischer method (General method) (ISO 760, NEQ)
SN/T 0736.1 fertilizer import and export inspection methods of sampling and sample preparation
3 Instrument
3.1 Oven. The temperature can be controlled at (105 ± 2) ℃.
3.2 Aluminum Case. Diameter 40mm ~ 50mm, height 25mm equivalent size or glass weighing bottle.
3.3 vacuum oven. Temperature range. 40 ℃ ~ 240 ℃, vacuum degree. 0.1kPa ~ 101kPa (1mmHg = 0.133kPa).
3.4 vacuum dryer. with phosphorus pentoxide, magnesium perchlorate or barium chloride desiccant.
3.5 Karl Fischer titration instruments directly by GB/T 6283 equipment.
4 Reagents
4.1 in the standard reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of GB/T 601's.
4.2 methanol. water content quality score ≤0.05%, if the water content of the mass fraction > 0.05%, was added to 500mL of methanol 5A stars
Molecular sieve (4.6) of about 50g, stuffed with cork, allowed to stand overnight, to learn to use the supernatant.
4.3 dioxane. dehydration treatment method with 4.2.
4.4 ethanol. dehydration treatment method with 4.2.
4.5 Karl Fischer reagent. According to GB/T 6283 preparation.
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