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Chealating Agent, Sodium Ferric EDTA, Calcium EDTA Chelate, Copper EDTA Chelate, Manganese EDTA Chelate, Iron EDTA Chelate, 16455-61-1, 15708-41-5, 62-33-9, 14025-15-1, 15375-84-5, 15708-41-5

Chealating Agent, Sodium Ferric EDTA, Calcium EDTA Chelate, Copper EDTA Chelate, Manganese EDTA Chelate, Iron EDTA Chelate, 16455-61-1, 15708-41-5, 62-33-9, 14025-15-1, 15375-84-5, 15708-41-5

EDTA CHELATES 

INTRODUCTION: EDTA CHELATES

EDTA chelates are stable complex compounds formed between ethylenediaminetetraacetic acid (EDTA) and metal ions. These chelates keep metal ions in soluble and bioavailable form, making them widely used in agriculture, food, pharmaceutical, and industrial applications. Chelation protects mineral ions from being prematurely broken down, making chelated minerals more stable and easily available for plant uptake.

SECTION 1: IRON EDTA CHELATE (FERRIC EDTA)

Parameter Information
Chemical Name Ethylenediaminetetraacetic acid ferric sodium salt
CAS Number 15708-41-5
Molecular Formula C₁₀H₁₂FeN₂NaO₈
Molecular Weight 367.05 g/mol
Appearance Yellow to yellowish-brown crystalline powder
Solubility Soluble in water (>100 g/L at 20°C)
pH (1% Solution) 3.5-5.5
Iron Content 12.7-13.3% (typical)
EC Number 239-802-2
Melting Point ~80°C (decomposes)

Key Features

  • High bioavailability: 2-4 times higher absorption compared to iron sulfate

  • Phyate resistance: Stable even in the presence of phytic acid and polyphenols

  • Agricultural use: Treats iron chlorosis in plants, especially in alkaline soils

  • Soil stability: FeEDTA is stable in soil suspensions of pH 5.7 and 6.1, moderately stable at pH 6.75, but unstable at pH 7.3 and 7.85

Applications

Sector Application
Agriculture Treatment of chlorosis in plants; iron supplementation in alkaline soils
Food Industry Iron fortification of flour, cereals, soy sauce, beverages
Pharmaceutical Iron supplements and nutraceuticals
Industrial Stabilizer in paper production; bleaching agent in photography

SECTION 2: CALCIUM EDTA CHELATE (CALCIUM DISODIUM EDTA)

Parameter Information
Chemical Name Ethylenediaminetetraacetic acid calcium disodium salt
CAS Number 62-33-9
Molecular Formula C₁₀H₁₂CaN₂Na₂O₈·xH₂O
Molecular Weight 374.27 g/mol (anhydrous)
Appearance White crystalline powder
Solubility Soluble in water
pH 5.0-7.0
Calcium Content 9.5-10%
EC Number 200-529-9

Key Features

  • Chelating agent: Used as an antidote in heavy metal poisoning

  • Food stabilizer: Prevents metal ion contamination in food products

  • Calcium source: Treats calcium deficiencies in plants

Applications

Sector Application
Agriculture Treatment of calcium deficiencies in plants
Food Industry Stabilizer and preservative in food products
Pharmaceutical Antidote in heavy metal poisoning
Cosmetics Stability enhancer in formulations

SECTION 3: COPPER EDTA CHELATE (COPPER DISODIUM EDTA)

Parameter Information
Chemical Name Ethylenediaminetetraacetic acid copper disodium salt
CAS Number 14025-15-1
Molecular Formula C₁₀H₁₂CuN₂Na₂O₈
Molecular Weight 397.74 g/mol
Appearance Blue powder
Solubility Soluble in water
Copper Content 14.7-15.3%
pH (1% Solution) 5-7

Key Features

  • High stability: Maintains copper in soluble and available form across a wide pH range

  • Plant metabolism: Essential for chlorophyll synthesis and photosynthesis

  • Effective supplementation: Rapid absorption in foliar and soil applications

  • Soil behavior: CuEDTA is most stable in neutral soil suspensions; displaced by Fe in acid soils and by Ca in calcareous soils

Applications

Sector Application
Agriculture Treatment of copper deficiencies; prevention of fungal diseases
Horticulture Foliar applications and fertigation
Industrial Plating baths; catalyst applications

SECTION 4: MANGANESE EDTA CHELATE (MANGANESE DISODIUM EDTA)

Parameter Information
Chemical Name Ethylenediaminetetraacetic acid manganese disodium salt
CAS Number 15375-84-5
Molecular Formula C₁₀H₁₂MnN₂Na₂O₈
Molecular Weight 389.13 g/mol
Appearance Light pink crystalline powder
Solubility Soluble in water (400 g/L at 20°C)
Manganese Content 12.7-13.3%
pH (1% Solution) 5-7
EC Number 239-407-5
Bulk Density 600-800 g/L

Key Features

  • Enzyme activator: Activates more than 35 plant enzymes

  • Photosynthesis: Involved in oxygen evolution and carbon fixation

  • Stress tolerance: Protects against oxidative stress through MnSOD enzyme

  • pH stability: Stable across pH 3-10 range

  • Soil behavior: Loss of Mn from MnEDTA is very rapid in all soils; essentially complete in less than one day from suspensions of pH 6.1 to 7.85

Applications

Sector Application
Agriculture Treatment of manganese deficiencies (chlorosis, stunting)
Horticulture Foliar applications and fertigation
Hydroponics Manganese source in nutrient solutions (0.5-2 ppm)
Aquarium Trace element supplementation in marine aquariums
Industrial Complexometric titrations, analytical chemistry

Manganese EDTA Application Rates

Application Rate Notes
Foliar Application 0.2-0.5 lb/200 gal water/A 0.05-0.1% solution
Hydroponics 3.84-15.38 g/1000 L 0.5-2 ppm Mn
Field Crops 0.5-2.0 kg/ha 1-2 applications per season

SECTION 5: COMPARATIVE SUMMARY TABLE

Parameter Iron EDTA Calcium EDTA Copper EDTA Manganese EDTA
CAS Number 15708-41-5 62-33-9 14025-15-1 15375-84-5
Molecular Weight 367.05 g/mol 374.27 g/mol 397.74 g/mol 389.13 g/mol
Appearance Yellow powder White powder Blue powder Pink-white powder
Solubility in Water >100 g/L Soluble Soluble 400 g/L
Metal Content 12.7-13.3% 9.5-10% 14.7-15.3% 12.7-13.3%
pH (1% Solution) 3.5-5.5 5.0-7.0 5-7 5-7
Primary Use Iron deficiency Calcium deficiency Copper deficiency Manganese deficiency

SECTION 6: BASF LIBREL® PRODUCT COMPARISON

BASF's Librel® series are EDTA-chelated micronutrient products. Product information based on available sources:

BASF Product Element Active Ingredient Form Content
Librel® Fe-LO Iron (Fe) Iron EDTA Chelate Fine granule 13.2% Fe
Librel® Cu 14 Copper (Cu) Copper EDTA Chelate Fine granule 14% Cu
Librel® Mn 13 Manganese (Mn) Manganese EDTA Chelate Fine granule 13% Mn
Librel® Zn 15 Zinc (Zn) Zinc EDTA Chelate Fine granule 14% Zn
Librel® Ca 10 Calcium (Ca) Calcium EDTA Chelate Fine granule 10% Ca
Librel® RMX 26 Multi-micronutrient EDTA chelate blend Fine granule Multiple nutrients

Note: Librel® Fe-Lo contains 13.2% chelated iron, Librel® Cu has 14% copper, Librel® Zn has 14% zinc, and Librel® Mn contains 13% manganese in EDTA-chelated form.

SECTION 7: APPLICATION GUIDELINES

Crop Susceptibility to Micronutrient Deficiencies

Crop Fe Mn Cu Zn
Bean Medium High Low Low
Citrus High High High High
Grape Medium High High High
Lettuce High Medium High Low
Potato Low High Low Medium
Strawberry High High Medium High
Tomato High Medium Medium Medium

General Application Rates

Nutrient Application Rate Source
Iron (Vegetables) 0.5-1 lb/100 gal water/A Iron chelates
Copper (Corn) 0.8 lb/100 gal water/A Na₂CuEDTA
Manganese (Vegetables) 0.2-0.5 lb/200 gal water/A Na₂MnEDTA
Zinc (Foliar) 0.5 g/L water Na₂ZnEDTA

SECTION 8: STORAGE AND SAFETY

Parameter Information
Storage Temperature Room temperature (20-25°C)
Storage Conditions Cool, dry, well-ventilated area
Shelf Life 2-3 years (under proper storage)
Safety Generally non-toxic; wash with water upon contact
Incompatibilities Strong oxidizing agents

LEGAL DISCLAIMER

The information provided in this document is based on our current knowledge and experience and is presented in good faith; however, as all conditions of use are beyond our control, it does not constitute a binding specification or warranty. This Technical Data Sheet is for informational purposes only. Users are responsible for testing the suitability for their own applications. Librel® and BASF are registered trademarks of BASF. For complete safety, storage, use, handling, disposal, and regulatory compliance information, please refer to the official Safety Data Sheet (SDS) provided by the manufacturer/supplier.

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