Resources
Practical guides on selecting, documenting and handling industrial chemicals — written for procurement and technical teams sourcing from us.
Choosing a coagulant: ferric chloride vs. ferric sulfate
Both are iron-based coagulants used to remove suspended solids, phosphates and organic matter from raw and waste water, but they behave differently on the plant floor. Ferric chloride is more acidic and generally the faster, stronger-acting coagulant per dose, which suits raw water with higher turbidity or colour. Ferric sulfate is milder on pH and equipment, and is often preferred where corrosion control or a narrower pH swing matters, or where the treated water feeds a process sensitive to chloride residuals.
Both grades are available from us as liquid or, for ferric chloride, powder — liquid grades dose more easily through standard metering pumps, while powder grades reduce transport volume and suit sites without bulk liquid storage.
- Ferric chloride
faster-acting, lower pH — suited to higher-turbidity raw water - Ferric sulfate
milder on pH and equipment — easier to hold within a tight range - Liquid vs. powder
liquid doses easily; powder cuts transport volume and storage footprint
- Light soda ash
lower bulk density — dissolves faster, common in detergents and water treatment - Dense soda ash
higher bulk density, denser granules — the standard input for glass melting
Soda ash: light vs. dense — what's the difference
Light and dense soda ash are chemically identical (sodium carbonate, Na₂CO₃) — the difference is physical, not chemical. Light soda ash has a lower bulk density and finer, more porous granules, so it dissolves faster in water; it's the grade typically chosen for detergent formulation and water treatment.
Dense soda ash is produced with a denser, more uniform granule structure that flows and meters more consistently through glass-furnace batching equipment, which is why it's the standard input for container and flat glass manufacturing. The choice between the two generally comes down to how the receiving process handles the material, not the underlying chemistry.
Reading a COA and SDS before you order
A Certificate of Analysis (COA) reports the actual test results for a specific production batch — assay/purity, appearance, and any other parameters relevant to that chemical — so you can confirm the material you're about to receive matches the specification you ordered against. Always match the COA to the batch or lot number on the shipment, not just the product name.
A Safety Data Sheet (SDS) is a separate document covering hazard classification, handling, storage and transport requirements — it doesn't change batch to batch the way a COA does, but it's what your safety, customs and logistics teams will need on file. Both documents are provided on request for any grade we supply.
Quick reference
| COA | Batch-specific test results vs. spec |
|---|---|
| SDS | Hazard, handling & transport data |
| CAS number | Confirms exact substance identity |
| Match to | Batch / lot number on the shipment |
- Manganese & zinc sulphate
correct classic deficiency symptoms in leaf tissue - Ferrous sulphate
iron source for correcting chlorosis in alkaline soils
Micronutrient sulphates: manganese, zinc & iron
Manganese, zinc and iron are needed in small quantities compared to primary nutrients like nitrogen and potassium, but a deficiency in any one of them still shows up clearly — manganese and zinc deficiency typically appears as interveinal yellowing on newer leaves, while iron deficiency (chlorosis) is common in high-pH, calcareous soils where iron becomes less available to the plant regardless of how much is present in the soil.
Sulphate forms of these micronutrients are widely used because they're water-soluble and can be applied either as a soil treatment or as a foliar spray for a faster response, and because the sulphate itself contributes a secondary nutrient (sulphur) that many soils are also marginal in.
Packaging formats for industrial chemicals
Packaging is usually decided by three things: the physical state of the material, the order quantity, and how the receiving plant handles incoming stock. HDPE drums suit liquids in small-to-mid volumes and are easy to handle without dedicated unloading equipment. IBC totes hold more per unit and work well where a forklift or pump can offload directly into process tanks.
Bagged solids (typically moisture-lined for hygroscopic grades) are the standard for powders and granules moved in pallet quantities, while ISO tanks and bulk options come into play for higher-volume liquid or gas shipments, particularly on export orders. The right format for a given grade is confirmed against your quantity and destination at enquiry stage.
Common formats
| HDPE Drums | Liquids, small – mid volumes |
|---|---|
| IBC Totes | Liquids, bulk-handled at destination |
| Moisture-lined Bags | Powders & granules |
| ISO Tanks | High-volume liquid export |
| Glass Bottles | Sensitive / small-lot liquids |