GB/T 10510-2023Nitrophosphate, potassium nitrophosphate (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 10510-2007 "Nitrophosphate Fertilizer, Nitrophosphate Potassium Fertilizer". Compared with GB/T 10510-2007, except for structural adjustment In addition to general and editorial changes, the main technical changes are as follows.

---Changed the scope (see Chapter 1, Chapter 1 of the 2007 edition);

---Changed the introduction to Chapter 3 (see Chapter 3); changed the definition of nitric acid phosphate fertilizer (see 3.1, 3.1 in the 2007 version), deleted "Mating type" terms and definitions (see 3.3 of the 2007 edition);

---Change the product grade to Type I, Type II, and Type III, and change the product technical indicators (see Table 1 and Table 2, Table 1 of the 2007 version), The index of the percentage of nitrate nitrogen in total nitrogen has been increased (see Table 1 and Table 2), and the chloride ion index has been added to nitric acid phosphate fertilizer products (see Table 1). Added limit requirements for toxic and harmful substances (see 4.3);

--- Added the determination method of total nitrogen content (see 5.2.1.2, 5.2.1.3), added the determination method of nitrate nitrogen content (see 5.2.2), added Added the determination method of available phosphorus content (see 5.2.3.2), added the determination method of potassium content (see 5.2.4.2), added the method of chloride ionization The determination method of sub-content (see 5.5.2), and the determination method of toxic and harmful substances (see 5.6) are added;

---Changed the inspection categories and inspection items (see 6.1, 6.1 of the 2007 edition);

---Changed the requirements for marking (see Chapter 7, Chapter 7 of the 2007 edition);

---Changed the packaging requirements for bagged products (see 8.1, 2007 version of 8.1).

1 Scope

This document stipulates the technical requirements, inspection rules, labeling, packaging, transportation and storage of nitrate phosphate fertilizer and nitrate phosphate potassium fertilizer, and describes the test methods for nitrate phosphate fertilizer and nitrate phosphate potassium fertilizer.

This document applies to fertilizers containing nitrogen, phosphorus (potassium) and processed by decomposing phosphate rock with nitric acid.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 3597 Determination of nitrate nitrogen content in fertilizers Nitrogen reagent gravimetric method

GB/T 6274-2016 Fertilizer and soil conditioner terminology

GB/T 6679 General principles for sampling of solid chemical products

GB/T 8170-2008 Numerical rounding rules and representation and determination of limit values

GB/T 8569 Solid chemical fertilizer packaging

GB/T 8572-2010 Determination of total nitrogen content in compound fertilizers - Titration method after distillation

GB/T 8574 Determination of potassium content in compound fertilizers - Potassium tetraphenylborate gravimetric method

GB/T 10511 Determination of total nitrogen content in nitric acid phosphate fertilizers - Titration method after distillation

GB/T 10512 Determination of phosphorus content in nitric acid phosphate fertilizers - Quinoline phosphomolybdate gravimetric method

GB/T 10513 Determination of free water content in nitrophosphate fertilizers by Karl Fischer method

GB/T 10514 Oven method for determination of free water content in nitrophosphate fertilizers

GB/T 10515 Determination of particle size of nitric acid phosphate fertilizer

GB/T 15063-2020 Compound fertilizer

GB 18382 Fertilizer labeling content and requirements

GB/T 22923-2008 Automatic analyzer method for determination of nitrogen, phosphorus and potassium in fertilizers

GB/T 24890 Determination of chloride ion content in compound fertilizers

GB 38400 Limit requirements for toxic and harmful substances in fertilizers

3 Terms and definitions

The terms and definitions defined in GB/T 6274-2016 and the following apply to this document.