Inorganic nitrogenous fertilizer N(CaO,MgO) 27(3-4)

Trade name: Salmag® 
Chemical name: mixture of ammonium nitrate with calcium carbonate and magnesium carbonate
PKWiU: 20. 15. 35. 0
CN: 31 02 40 10

Unit: Grupa Azoty ZAK S.A.

Product description

Granulated fertilizer, uniform loose granules, beige to brown in colour, 2-5 mm in size, constitute not less than 95% of the mass. Covered with anti-caking agents, without permanent caking characteristics. Bulk density: 1.0 kg/dm3. Salmag®/Saletrzak is a mixture of ammonium nitrate with calcium carbonate and magnesium carbonate. The fertilizer includes 27.5% of nitrogen (N), including 13.8% in the ammonium form and 13.7% in the nitrate form. It also includes 3.5% of calcium soluble in water (CaO) and 4% of total magnesium (MgO).

Intended use and application

Salmag®/Saletrzak, as a universal nitrogen fertilizer, may be used for all cultivated plants: winter and spring crops, economic plants, fodder and root crops, on grassland and in cultivation of vegetables and fruit cultures, from spring until summer. Owing to the calcium and magnesium content, it is best that it is mixed with soil after sowing. In top dressing, when mixing with soil is not possible, apply on humid soil or before expected rainfall.

On account of its hygroscopicity, Salmag®/Saletrzak may be mixed immediately before spreading with PODLIDAP®, POLIFOSKA® and POLIMAG® S, and with potash salt, provided that the fertilizers are dry.


Salmag®/Saletrzak includes practically the same volume of slow-release ammonia nitrogen and fast-release nitrate nitrogen. Ammonia nitrogen is not washed out of the soil, is absorbed by plants slowly, enhances plant rooting, supports absorption of phosphorus and limits excess absorption of potassium. Fast-release nitrate nitrogen accelerates vegetation of plants soon after application of fertilizer, which means that in spring it accelerates the regeneration of plants following winter inactivation and contributes to the proper growth of plants when used before the phases of the highest demand.

With an equal volume of each form (ammonia and nitrate), Salmag®/Saletrzak is a universal nitrogenous fertilizer in our climatic and soil conditions.

Packaging and transport

Salmag®/Saletrzak is packaged in:
  • 25 or 50 kg ± 1% polyethylene bags with overprint;
  • Flexible containers at 500 kg ± 1% or more, the so-called big-bags;
  • Bulk.

The fertilizer must be transported while protected against water, rainfall, direct sunlight and damage to the packaging. It is forbidden to transport the fertilizer along with substances which may react with Salmag®/Saletrzak or are flammable, such as plant protection products, fertilizers with chlorides, metal oxides, acids, powdered metals, coal etc. Salmag®/Saletrzak is not classified, i.e. it is not considered a hazardous material according to the UN Orange Book and international transport codes, for example RID (railway transport), ADR (road transport) and IMDG (sea transport).

With regard to transportation using the road vehicles of the recipient or of a carrier acting on the direct instructions of the recipient, it is the recipient or the carrier who is responsible for any deterioration in the quality of the fertilizer.


Salmag®/Saletrzak is a highly hygroscopic product and should be stored in clean and dry warehouse buildings with non-flammable floors ensuring good insulation against moisture.

Salmag®/Saletrzak should be protected against:
  • Water and rainfall;
  • Direct sunlight;
  • Mechanical damage to packages;
  • Heating above 30°C.

The distance from the walls should be at least 20 cm, and from sources of heat at least 150 cm. Damaged bags should be stored separately.

In the immediate vicinity of Salmag®/Saletrzak should be placed no chemical compounds and materials which may react with it, such as plant protection products, fertilizers with chlorides, organic substances, highly alkaline substances (for example soda lye), lime, cement, powdered metals, metal oxides, acids and flammable materials like coal, wood, sawdust, lubricants, oils, engine fuels and straw. Salmag®/Saletrzak must not be stored in an open space owing to its low resistance to temperature changes and the impact of moisture and heat.

Inside warehouse premises, smoking and the use of open flame is forbidden, while electrical wires should be sufficiently protected against shorting. Polyethylene bags with overprint of a net content of 25 or 50 kg should be stored in horizontal layers on a non-flammable floor, in 10 layers at the most. Fertilizer in flexible containers of less than 500 kg in weight may be stored in piles of up to two layers, and in one layer if weight exceeds 500 kg. In the case of pallet storage, loading units should be made of one-layer piles.

Precautions:If irritation occurs, wash skin and eyes with plenty of water. Dust masks and safety goggles are recommended. If swallowed accidentally, seek medical advice. Nontoxic, odourless, non-flammable fertilizer.

Support and consulting

Aiming to provide the highest standards of customer service, the Grupa Azoty offers professional consulting, information support for farmers and food producers.

Support includes:
  • Client support with technical knowledge, that is, consulting in fertilizer use
  • Resolution of problems reported by the client (dosage, chemical composition of fertilizers, mechanisms of effect on cultivated plants and elements of the natural environment)
  • Provision of information on distribution centres in the country
  • Information on the current fertilizer product range of the Grupa Azoty


Sales information: Filip Konieczny

phone +48 77 481 23 83

fax +48 77 481 26 27

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