flour-like powder from light yellow to brown color
non-hazardous
by covered transport
in dry unheated warehouse premises
| Parameter name | Value |
|---|---|
| Mass fraction of dry solids, %, not less than | 92 |
| Mass fraction of main substance, %, not less than | 58 |
| Mass fraction of ash relative to dry solids, %, not more than | 25 |
| Hydrogen ion concentration of TPL solution, pH units, not less than | 4.6 |
| Tensile strength of dried samples, MPa, not less than | 0.60 |
Technical powdered lignosulfonate is a dry, dispersible material with stable bulk density and uniform particle distribution. When stored correctly, it retains its flowability, dissolves quickly and forms stable colloidal systems with predictable viscosity. This form is convenient for precise dosing both on weight dispensers and in automated dissolution units, as well as for uniform distribution in mineral and organic mixtures. Color and ash content stay within the acceptable limits for the technical grade, and foaming is controlled and does not interfere with pumping of process fluids. Supplied in sealed industrial packaging with a certificate and actual test results; packaging can be adjusted to line requirements and shipment schedules to match the production cycle upon request.
Technical specification TU 2455-028-00279580-2014 sets quality requirements for powdered lignosulfonate: it standardizes moisture content, ash content, water solubility, pH and a number of functional parameters affecting dispersing and plasticizing capacity. The document describes control methods, acceptance rules and sampling and combining procedures, as well as requirements for packaging, transportation, labeling and storage conditions. Thanks to the unified regulation, results from different laboratories are comparable, and the consumer gets transparent specifications and predictable product behavior in formulations. This reduces incoming inspection time and simplifies process scale-up when switching batches without adjusting process modes.
Powdered lignosulfonate is obtained from lignin-containing streams of pulp and paper production, followed by sulfonation, purification and concentration. The initial solution is stabilized by pH, undesirable components are removed, then it is concentrated to the required solids content and converted into a dry form by spray drying or another dehydration method that preserves solubility and functional activity. The material is then cooled, sized by particle distribution, excess fines are removed, and it is packaged into moisture-resistant containers. At each stage, laboratory control of key parameters is carried out, ensuring reproducibility of properties from batch to batch and compliance with the requirements of TU 2455-028-00279580-2014.
Lignosulfonate is classified as a low-hazard substance; it does not burn and is not explosive. Nevertheless, dust formation and aerosol inhalation should be avoided during work — use gloves and safety goggles, and provide local ventilation when transferring the material. Store the product in a dry room, in tightly closed containers, away from moisture and aggressive reagents. If it gets on the skin, wash with water and a neutral detergent; if it gets into the eyes, rinse with running water for at least 10–15 minutes and consult a doctor if necessary. Collect and dispose of spills according to internal regulations.
| Monoammonium Technology |
| Sodium hexametaphosphate SHMP |
| Aluminum sulfate 18-water pure |
| Nitric acid "p.a." (57 %) TU 2612-046-057 61643-95 |
| Technical Powdered Lignosulfonate |
Technical powdered lignosulfonate LSTP is a dry powder product, produced under TU 2455-028-00279580-2014. The abbreviation LSTP may be used in listings and documents, so when purchasing it is important to check not only the name but also the supply form, the mass fraction of dry substances, the mass fraction of the main substance, ash content, solution pH and the batch’s functional indicators. For an enterprise, this helps match the raw material to the internal specification and avoid a mistake when ordering the liquid or powdered product.
For powdered lignosulfonate, the mass fraction of dry substances, content of the main substance, ash content, solution pH and the strength of dried samples matter. These parameters affect batch stability, solubility, behaviour in working mixtures and the repeatability of the process result. On receipt, the colour, powder uniformity, absence of wetting, lumps, foreign inclusions and bag damage are also checked. For regular deliveries, it is advisable to record the indicators of each batch to monitor raw material stability.
Technical powdered lignosulfonate disperses well in water, but for a stable solution it is introduced gradually, with stirring and concentration control. Under production conditions it is important to prevent the formation of dense lumps, use a clean container and check the solution for homogeneity. If the solution is fed through pumps, nozzles or dosing equipment, before starting it is worth assessing the absence of undissolved particles and compliance of the pH with the enterprise’s working range.
Technical powdered lignosulfonate is stored in dry, unheated warehouses, in sealed factory packaging and protected from moisture. If it gets wet, the powder can clump, dissolve worse and lose its ease of dosing. Bags are placed on pallets, avoiding contact with a wet floor, packaging damage and contamination of the raw material.
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