T/CPFIA 0006-2022 Active Group standards

T/CPFIA 0006-2022 Polyglutamic acid-based fertilizer

Publish Date: 2022-12-27 Implement Date: 2023-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPFIA 0006-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Fertilizer

Publish Date: 2022-12-27

Implement Date: 2023-01-01

Scope

Main Technical Content: 4.1 Requirements for Polyglutamic Acid Raw Materials Polyglutamic acid raw materials are divided into powder and liquid forms. For the powder form, the molecular weight should be 5,000 Da to 3,000,000 Da, and for the liquid form, the molecular weight should be 100,000 Da to 3,000,000 Da. The liquid form should also meet the requirements of Table 1. Table 1: Requirements for Polyglutamic Acid Raw Materials (Liquid Form) Item Indicator Appearance Pale yellow to brown Polyglutamic acid content (%) 3.5–17.5 pH 5.0–7.5 Water-insoluble matter (%) ≤1.0 4.2 Requirements for Polyglutamic Acid-Containing Compound Fertilizers 4.2.1 Appearance Granular, rod-shaped, or flake-shaped products without mechanical impurities and with uniform color. 4.2.2 Technical Indicators Polyglutamic acid-containing compound fertilizers should meet the technical indicators in Table 2 and comply with the values indicated on the packaging container. Table 2: Technical Indicators for Polyglutamic Acid-Containing Compound Fertilizers Item Indicator High Concentration Medium Concentration Low Concentration Total Nutrients (N + P2O5 + K2O) (%) ≥40.0 30.0 25.0 Polyglutamic acid (mg/kg) ≥140 Water-soluble phosphorus as a percentage of effective phosphorus (b) ≥60 50 40 Nitrate nitrogen (c) (%) ≥1.5 Water content (H2O) (%) ≤2.0 2.5 5.0 Particle size (e; 1.00 mm to 4.75 mm or 3.35 mm to 5.60 mm) ≥90 Chloride ion (f) Products not labeled as "chloride-free": ≤3.0 Products labeled as "chloride (low chloride)": ≤15.0 Products labeled as "chloride (medium chloride)": ≤15.0