GB/T 12005.3-2026Polyacrylamide - Part 3: Requirements for general materials (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 is Part 3 of GB/T 12005 "Polyacrylamide". GB/T 12005 has already published the following parts.

2.Performance Testing;

3.General Product Requirements. This document supersedes GB/T 13940-1992 "Polyacrylamide". Compared with GB/T 13940-1992, this document has the following changes except for structural adjustments and... Aside from editorial changes, the main technical changes are as follows:

---The scope has been changed; the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements for colloids have been deleted, and new requirements have been added. Suitable for cationic and amphoteric polyacrylamides; not suitable for polyacrylamide products used in hygiene, food, and water treatment. (See Chapter 1, Chapter 1 of the.1992 edition);

---The model number has been removed (see Chapter 3 of the.1992 edition);

---Added polyacrylamide, anionic polyacrylamide, nonionic polyacrylamide, cationic polyacrylamide, and amphoteric polyacrylamide. Terminology and definitions for ionic polyacrylamide (see Chapter 3);

---The quality grades have been changed, and the superior grade has been discontinued (see Tables 1 and 2 in Chapter 4, and Chapter 3 in the.1992 edition);

---Technical requirements for cationic and amphoteric polyacrylamide have been added (see Table 2);

---The technical requirements for anionic and nonionic polyacrylamide have been revised (see Table 1, Chapter 4 of the.1992 edition);

---The experimental methods have been removed (see Chapter 5 of the.1992 edition);

---The sampling content has been changed (see 5.2,

6.2 in the.1992 version);

---Added random inspection content (see 5.3);

3 General Product Requirements

1.Scope This document specifies the technical requirements and test methods for anionic, nonionic, cationic, and amphoteric polyacrylamides. Inspection rules, marking, packaging, transportation and storage requirements. This document applies to the production and inspection of polyacrylamide products made from acrylamide as the main raw material using different polymerization methods. This document does not apply to the production and inspection of polyacrylamide products used in hygiene, food, and water treatment.

4.Technical Requirements and Test Methods The technical requirements and test methods for powdered polyacrylamide are shown in Tables 1 and 2.

5 Batching, Sampling and Sampling

5.1 Batching Powdered or granular products produced under the same raw materials and process conditions are considered as a batch after drying, pulverizing, and mixing in one or more batches.

5.2 Sampling Sampling of powdered polyacrylamide shall be conducted in accordance with GB/T 6678, with each sample weighing no less than 1 kg, or as agreed upon by the relevant parties. The collected samples were placed into two clean, dry, transparent plastic sampling bottles (bags), sealed, and stored separately. One bottle (bag) was used for testing, and the other bottle (bag) was used for other purposes. Retain a sample for future re-inspection. Specify the product model, location, batch number, and sampling date.

5.3 Spot checks For the same batch of products, samples shall be taken from the sampling port of the production line before packaging, or after packaging, the products shall be sampled in accordance with the provisions of GB/T 6678.

7 Marking, Packaging, Transport and Storage

7.1 Marking Each batch of products should be accompanied by a quality inspection report, and each package should have a clear and secure marking indicating the following information.

a) Product Name;

b) Product type;

d) This document number;

e) Production date;

f) Batch number;

j) Manufacturer's name;

l) Moisture-proof and sun-protection labels.