Aluminum Sulfate 48%
CAS 10043-01-3 · Part MC-ALUM48 · Technical / NSF grade available
Forty-eight percent liquid alum. The long-standing primary coagulant for drinking water clarification and industrial solids removal.
Specification
- CAS number
- 10043-01-3
- Part number
- MC-ALUM48
- Grade
- Technical / NSF grade available
- Physical form
- Liquid
- Assay / concentration
- 48% w/w
- Category
- Water Treatment
- Also known as
- alum, liquid alum, aluminium sulphate, filter alum, Al2(SO4)3
Liquid aluminium sulfate at 48%, NSF grade available for potable water treatment.
Typical uses
- Primary coagulant in drinking water clarification
- Turbidity and colour removal
- Phosphorus precipitation
- Paper sizing and retention
- Industrial wastewater solids removal
Operating notes
Alum works in a narrower pH band than ferric, roughly 5.5 to 7.5 depending on the water, and it consumes alkalinity as it hydrolyses. In a low-alkalinity source water that means pH drops as dose increases, which caps how much you can add before you need supplemental alkalinity — usually soda ash or caustic.
Cold water performance falls off noticeably. Plants on surface water sources often see their required dose climb in winter for exactly this reason.
Handling
Mildly corrosive rather than aggressively so. Use FRP, HDPE, or 316 stainless. It crystallises in cold weather at this concentration, so unheated outdoor storage in a cold climate needs attention.
Documents
Available to account holders and sent the same business day. If you need documents routinely, ask us to attach them to your shipping paperwork automatically rather than requesting them one at a time.
Current revision, sixteen-section GHS format
Measured results for the lot you received
Read the sheet before the first use
Section 2 covers the hazards, Section 8 the protective equipment actually required, and Section 10 what this must not be stored next to. Storage incompatibility is the single most common cause of serious chemical incidents.
More in Water Treatment
| Product | CAS | Available as | Documents |
|---|---|---|---|
| Ferric Chloride 40% Technical / NSF grade available | 7705-08-0 | Bulk 275 gal tote 55 gal drum | SDS · CoA |
| Coag-Plus Miles line | Blend | 55 gal drum 275 gal tote Bulk | SDS · TDS |
| Calcium Chloride 35% Technical | 10043-52-4 | Bulk 275 gal tote | SDS · CoA |
If your approval process needs something that is not here, one email gets it.
Certificates, insurance, registrations, safety data sheets, and completed supplier questionnaires. Standard documents go out the same business day.