
Aluminium Sulphate 17% Powder Water Treatment Flocculant Clarifier 1.5kg
Aluminium Sulphate 17% Powder is a dependable coagulation chemical used to clarify water by helping tiny suspended particles clump together into heavier “flocs.” These flocs settle faster or can be captured more easily by filters, improving clarity in many non-potable and process-water applications. This makes it popular for turbidity reduction trials, filtration support, settling tank performance improvement, and repeatable dosing in workshops or small industrial setups.
This listing is for 1500g (1.5kg) supplied by HD Chemicals LTD in a strong plastic jerry can—ideal for customers who want durable, handle-friendly packaging for heavier weights. The jerry can is easy to carry, pour, and reseal, helping reduce moisture exposure during storage (the powder is hygroscopic and may clump if left open). When dissolved, solutions can be acidic, so use appropriate PPE, avoid dust, and always add powder to water while stirring. Store tightly closed in a cool, dry place.
Aluminium Sulphate powder strength marked 17% (common industry specification)
Effective coagulation/flocculation for water clarification
Helps fine solids settle faster for easier removal
Supports improved filtration performance
1.5kg size suits regular use and multiple batches
Strong plastic jerry can for safer handling and storage
Easy to pour and reseal to reduce moisture uptake
Hygroscopic powder—protected packaging helps reduce clumping
Suitable for process water, workshop, and lab-scale trials
Enables accurate metric dosing with consistent results
Safety first: Wear gloves and eye protection. Avoid breathing dust. Use in a ventilated area. Solutions may be acidic. Always follow local rules for use and disposal.
Jar testing to determine the best dose
Fill a jar with 1.0 L cloudy water
Make stock: dissolve 2.0 g in 200 mL water
Dose 5–50 mL stock (equals 0.05–0.50 g/L range for quick screening)
Stir fast 30 sec, slow 2–3 min, settle 15–30 min
Repeat with smaller steps around the best result
Clarifying a 200 L non-potable process tank
Start dose: 10 g (0.05 g/L)
Mix 10 minutes, then settle 45–90 minutes
Decant clear water or filter; remove sludge buildup
Clarifying a 500 L settling tank (routine maintenance)
Start dose: 25 g (0.05 g/L)
Mix 10–15 minutes; rest 1–2 hours
Skim/decant and clean settled solids
Pre-filter dosing to improve cartridge/sand filtration
Make dosing solution: 50 g in 5 L water
Add gradually upstream while mixing
If filter clogs quickly or haze forms, reduce dose
Emergency turbidity knock-down in stored water (non-drinking)
Dose 0.05–0.10 g/L (e.g., 10–20 g per 200 L)
Mix thoroughly, settle 60 minutes
Carefully decant the clearer top layer
Suspended solids reduction in wash-water recirculation
Start at 0.03 g/L (e.g., 15 g per 500 L)
Mix, settle, filter/decant
Adjust dose based on clarity and sludge volume
Colour/turbidity improvement trials
Treat 20 L test batches at 0.02, 0.05, 0.08 g/L
That equals 0.4 g, 1.0 g, 1.6 g respectively
Compare results after 30 minutes settling
Sludge thickening trial (improving dewatering)
Dose 0.05–0.15 g/L
Gentle mixing 2–5 minutes
Settle and measure sludge volume reduction; tune dose
pH-sensitive treatment checks
Measure pH before dosing
Dose in small steps (e.g., 0.02 g/L)
Re-check pH after mixing (solutions may lower pH)
Routine multi-batch dosing programme
Weigh doses in grams using a metric scale
Keep a log (volume treated, grams used, clarity result)
Store jerry can tightly closed between uses
Brand: HD Chemicals LTD
Weight: 1500g (1.5kg)
Grade: Technical
Form: Powder
Packaging: Strong Plastic Jerry Can (re-sealable)
Technical Data
Chemical name: Aluminium Sulphate / Aluminum Sulfate
Typical appearance: White/off-white powder or crystalline solid
Water solubility: Soluble
Solution nature: Acidic when dissolved
CAS (commonly used reference): 10043-01-3 (hydrated forms may be listed differently)
Molecular formula (reference): Al₂(SO₄)₃ (hydration state may vary)
Aluminum Sulfate 17% Powder 1.5kg, Aluminium Sulphate Powder, Alum Powder, Filter Alum, Water Treatment Coagulant, Water Clarifier Powder, Flocculant Powder, Turbidity Remover, Coagulation Agent, Process Water Clarifier, Settling Tank Chemical, Jerry Can Chemical
Q1: What does “17%” mean on the label?
A: It’s a common strength marking used for aluminium sulphate products in many specifications.
Q2: Why is this supplied in a plastic jerry can?
A: It’s stronger for heavier weights, easier to carry, pour, and reseal, and helps reduce moisture exposure.
Q3: What’s a safe starting dose?
A: Start with jar tests; many trials begin around 0.02–0.10 g/L and adjust to suit your water.
Q4: Does aluminium sulphate lower pH?
A: It can—solutions are typically acidic, so pH monitoring is recommended.
Q5: How do I dissolve it safely?
A: Add powder to water while stirring (not water to powder), and avoid dust.
Q6: Can I overdose it?
A: Yes—overdosing may create haze or poorer clarity. Reduce the dose and re-test.
Q7: How should I store it?
A: Keep the jerry can tightly closed, cool, and dry to reduce clumping.
Q8: Is this suitable for drinking water treatment?
A: Only for qualified users following approved processes and local regulations.
Q9: Why does it sometimes form clumps?
A: It absorbs moisture from air (hygroscopic). Reseal promptly after use.
Q10: Can I prepare a dosing solution in advance?
A: Yes—make a measured solution (e.g., grams per litres), label it clearly, and store safely.