PAPEMP / PAPMP 40%ZEELCHEM™ 141 · Manufacturer & Supplier
PAPEMP (polyamino polyether methylene phosphonate) is a specialty phosphonate with very high calcium tolerance and strong silica control. Where ATMP and HEDP precipitate above about 500–800 ppm hardness, ZEELCHEM™ 141 stays effective up to 2,000 ppm as CaCO₃. That makes it ideal for ZLD cooling and high-recovery RO.
PAPEMP / PAPMP 40% Chemical Identity
| Chemical name | Polyamino polyether methylene phosphonate |
|---|---|
| Synonyms | PAPEMP, PAPMP |
| Structure (representative) | Polyoxypropylene diamine backbone with four methylene phosphonic acid groups |
| Total phosphorus | ≥ 15% as PO₄³⁻ |
| Calcium tolerance | > 2,000 ppm as CaCO₃ |
| CAS number | 130668-24-5 |
PAPEMP / PAPMP 40% Specifications
Typical specification for ZEELCHEM™ 141. Every batch is dispatched with a batch Certificate of Analysis (COA).
| Parameter | Specification |
|---|---|
| Chemical name | Polyamino polyether methylene phosphonate |
| CAS number | 130668-24-5 |
| Active content | 40.0 – 43.0% min |
| Total phosphorus (as PO₄³⁻) | ≥ 15.0% |
| Specific gravity | 1.15 – 1.25 g/cm³ |
| pH (1% aqueous) | 1.5 – 3.0 |
| Calcium tolerance | > 2,000 ppm as CaCO₃ |
Applications & Recommended Dosing
Typical starting doses. Final dosing depends on your water analysis and system conditions; our chemists can help you optimize it.
| Application | Dose |
|---|---|
| High-hardness / high-pH cooling loops | 5.0 – 20.0 ppm |
| High-recovery reverse osmosis | 2.0 – 6.0 ppm |
| Oilfield waterflooding (high-salinity brine) | 10.0 – 30.0 ppm |
| Textile auxiliary bleaching chelation | 1.0 – 3.0 g/L |
- ZLD & high-cycle cooling towers
- High-recovery RO systems
- High-salinity oilfield brines
- Textile bleaching chelation
How PAPEMP / PAPMP 40% Works
Polyether backbone
Keeps the phosphonate soluble with calcium up to 2,000 ppm as CaCO₃.
Silica dispersion
Adsorbs onto colloidal silica and slows polycondensation into glassy scale.
Threshold inhibition
Controls carbonate and sulfate scale near solubility limits.
Key Benefits
- Calcium tolerance above 2,000 ppm as CaCO₃
- Controls reactive silica on RO membranes and in cooling loops
- Designed for ZLD systems running near solubility limits
- Better chlorine stability than traditional phosphonates
- Works in high-pH, high-hardness water
How much PAPEMP / PAPMP 40% do you need?
Packaging, Storage & Safety
⬢Packaging
- 60 kg carboys
- 250 kg virgin HDPE drums
- 1,250 kg IBC totes
- Road tankers
❄Storage & Shelf Life
- Store at 5 °C – 40 °C in acid-proof containers
- Keep in a dry, ventilated area away from direct sunlight
- Shelf life: 24 months in sealed original packaging
⚠Handling & Safety
- Mildly acidic
- Wear chemical splash goggles, nitrile gloves and protective clothing
- On contact, flush eyes or skin with water
Always read the Safety Data Sheet (MSDS/SDS) before handling. Pan-India dispatch from Vadodara, Gujarat.
TDS, MSDS & COA for PAPEMP / PAPMP 40%
Request documents instantly on WhatsApp. ZEEL PRODUCT is ISO 9001:2015, ISO 14001:2015 & ISO 22000:2018 certified.
Safety Data Sheet (MSDS)
16-section GHS-format safety, handling and transport information.
Request MSDS →PAPEMP / PAPMP 40%: Frequently Asked Questions
What is PAPEMP and why is it unique?
PAPEMP is a specialty phosphonate with very high calcium tolerance and strong silica dispersion, which standard phosphonates lack.
Which systems benefit most from PAPEMP?
ZLD cooling towers, high-cycle cooling loops and high-recovery RO systems with high silica and hardness.
What is the recommended PAPEMP dosage?
5–20 ppm active in high-hardness cooling water and 2–6 ppm in high-recovery RO feedwater.
How does PAPEMP control silica scale?
It adsorbs onto colloidal silica and slows polycondensation, keeping silica dispersed instead of forming glassy scale.
What is the calcium tolerance of PAPEMP?
Above 2,000 ppm as CaCO₃, compared with about 500–800 ppm for ATMP and HEDP.
What are the active content and pH of ZEELCHEM™ 141?
40–43% active, total phosphorus at least 15%, and a pH of 1.5–3.0 as a 1% solution.
Is PAPEMP compatible with chlorine?
Yes. It has better chlorine stability than traditional phosphonates.
What packaging is available?
60 kg carboys, 250 kg virgin HDPE drums, 1,250 kg IBC totes and road tankers.
What is the shelf life?
24 months in original sealed containers, stored dry and ventilated at 5–40 °C.
Do you provide COA and MSDS with every batch?
Yes. Every ZEELCHEM™ 141 consignment ships with a batch Certificate of Analysis, and the TDS and 16-section GHS Safety Data Sheet are available on request.
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