PROPERTIES OF LIMESTONE AMMONIUM NITRATE – LAN(28)

Limestone Ammonium Nitrate – LAN(28)

All figures quoted should be considered as a typical product analysis and may vary due to manufacturing process and raw materials.

PHYSICAL PROPERTIES

1. A light / dark grey granular product.
2. Particle shape typically spherical to oblong.
3. Particle size distribution typically ranging from 2.0 – 5.5mm.
4. Critical Relative Humidity @ 30ºC: 59.4 – 65, variance is dependant on chemical stabilisers and coatings used in the production process.
5. Critical Thermal Cycling temperature: 30 – 35ºC; manufacturers specification is normally printed in the bag.
6. Store in a cool dry shed out of direct sunlight.

CHEMICAL PROPERTIES

1. 28% Nitrogen (N).
2. N concentration may not exceed 28% in compliance with the Explosives Act (Act 26 of 1956).
3. 14 % N in Nitrate (NO₃^–) form and 14% N in Ammonium (NH₄⁺) form.
4. Ca content: 3.95 – 4.8%
5. Mg Content: 1.6 – 2.6%
6. Acidification index: 1.12 kg pure lime/kg N or 0.32kg pure lime per kg LAN
7. Salt index: 84 (versus Sodium Nitrate @ 100)

AGRONOMIC BENEFITS

1. The N in LAN is immediately available for plant uptake.
2. Research has shown that the 1:1 ratio of Ammonium – N to Nitrate – N as supplied by LAN is the ideal ratio for plant uptake in maize production.
3. LAN contains calcium and magnesium and is less acidifying to the soil than other forms of N.
4. LAN is less prone to N losses through leaching and volatilization than urea.
5. Compatible for blending with MAP, Potassium Chloride, Potassium Sulphate, Potassium Nitrate and Ammonium Sulphate.

Please note: Consult a qualified person (Act 36 of 1947) for specific applications / recommendations.