ScaleFree NP is a high-performance, environmentally responsible antiscalant formulated without phosphates or phosphonates. It is specifically engineered to prevent the formation and deposition of mineral scales such as calcium carbonate, calcium sulfate, barium sulfate, and iron fouling in reverse osmosis (RO) systems, SWRO Seawater Reverse Osmosis plants, cooling towers, and various industrial water circuits.
Utilizing a proprietary blend of low molecular weight polyacrylic and polymaleic acids along with sulfonated dispersants, ScaleFree NP offers superior threshold inhibition and crystal distortion. This allows for extended operational time, reduced downtime, and improved membrane efficiency—all while meeting stringent environmental regulations by eliminating phosphorus discharge.
Applications of ScaleFree NP No Phosphorous formulation Antiscalant
-
Reverse Osmosis (RO) and Nanofiltration (NF) systems
-
Cooling water systems
-
Boiler feedwater pretreatment
-
Industrial water circuits (desalination, power plants, refineries)
-
Where phosphorus discharge limits are enforced
|
Odour |
Odourless |
|
Appearance |
Liquid, Clear |
|
pH |
5-6 at 100 % concentration |
|
Boiling point |
100 °C at 760 mm /Hg |
|
Vapour pressure |
not known |
|
Freezing point |
<0 °C at 760 mm/Hg |
|
Solubility |
Completely soluble in water |
|
Specific gravity (water=1) |
1.15 - 1.7 |
RO antiscant
Scaling is caused in membranes because the level of hardness salts in the water becomes highly concentrated as it passes through the RO unit. In smaller units scale formation can be prevented by base exchange softening the make-up water but for larger systems that is very expensive. We have developed a range of easy to handle, cost effective RO Antiscalant which increase the solubility of the hardness salts so they remain in solution rather than forming scale on the membrane. Our cost effective RO antiscalants will inhibit a wide range of foulants including: calcium carbonate, calcium sulphate, barium sulphate, strontium sulphate, calcium fluoride, silica and iron.
RO Antiscalants are dosed directly to the RO feed water tank or feed water line (after pretreatment) at the recommended dosage of 1-3 mg/L and maximum dosage at 8mg/L, subject to inlet water quality and parameters is respect of Calcium Hardness, Iron, TDS, Alkalinity, pH and silica content. Maximum dilution should be 10% with RO or DI water for temperature less than 30 deg C. For higher temperature the dilution ratio can increase.
Key Features and Benefits
- Inhibit scale formation and effectively controls corrosion
- Protects the membrane efficiently
- Enhance the plant operation and equipments life span
- Economical
- Easy in usage and handling
It reduces the risk of scaling and eliminates the use of hazardous acids,resulting in efficient plant operation with highest possible conversion rate.
It is a very effective antiscalant . It is also compatible with RO CHEMICALS series of coagulant and flocculants (polyelectrolytes). Our RO Antiscalant (HIGH PH) is effective in minimizing scaling in presence of foulants like Calcium Carbonate, Sulfate salts of Calcium, Barium, Strontium and Magnesium, Calcium Fluoride, Iron and Silica.
Key Features and Benefits
- Effective scale inhibition
- Alkalinity builder
- High recovery rate
- Low Chemical dosage
- Cost Effective
- Effective Iron fouling control by sequestration
- Reduced frequency of membrane cleaning
- Compatible with all types of membranes
- Completely organic and biodegradable
Application and Dosage
Our RO Antiscalant (HIGH PH) is dosed directly to the RO feed water tank or feed water line (after pretreatment) at the minimum recommended dosage of 1ppm and maximum dosage at 15ppm, subject to inlet water quality and parameters is respect of Calcium Hardness, Iron, TDS, Alkalinity, pH and silica content.
In case of high iron content of about 0.5 to 1.0ppm, the dosing has to be increased by 10-15ppm for stabilizing Calcium.
At about 10-15ppm dosage our RO Antiscalant (HIGH PH) is capable of fully inhibiting iron and calcium, and silica up to 166ppm. For higher silica content RXSOL ANTISCALANT should be used.
Antiscalant RO RXSOL-33-3302-025
Antiscalant C.I ALKA RXSOL-33-2034-025
Membrane Antiscalant ALKA 191T RXSOL-33-3321-030
Antiscalant ORG EV 2030 RXSOL-33-3325-230
Antiscalant RXSOL ORG EV RXSOL-33-3327
Key Features of ScaleFree NP No Phosphorous formulation Antiscalant
-
Phosphorus-Free – Complies with discharge regulations, prevents eutrophication
-
Effective Scale Control – Inhibits calcium, barium, strontium, and iron scales
-
Membrane Compatible – Safe for use with all major RO membrane brands
-
Biodegradable Components – Environmentally sustainable formulation
-
Broad pH Range – Effective performance from pH 5.5 to 9.0
-
Low Dosage Requirement – Economical and efficient use
20, 25 Ltrs</p>

| Product Name | : | ScaleFree NP |
| Product Type | : | RXSOL-33-2034-050 |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
Stock Points: Mumbai, Kandla, Kolkata, Chennai, Visakhapatnam, Fujairah UAE, Muscat Oman, Kenya, Canada
| Phone | : | +91 22 65113333 / 5555 / 9999 / 27611360 |
| Fax | : | +91 22 2781 1318 :::AOH :0091 9821214367 |
| : | mail@rxmarine.com |

| Chemical Name | CAS Number | LD 50 (Oral Rat) |
| Co polymer of acrylic acid | Proprietary | > 5000 mg/kg |
| Acryl amido methyl propane sulphonic acid | 15214 –89 -8 | 1410 mg/kg |
| Acrylic terpolymer | Proprietary |
> 5000 mg/kg |
| Polymaleic acid | 26099– 09 -2 | 15000 mg/kg |
| Maleic acid | 110-16-7 | 15000 mg/kg |

|
Odour |
Odourless |
|
Appearance |
Liquid, Clear |
|
Contact with eyes |
Mildly irritating to eyes |
|
Contact with skin |
In cases of severe exposure, irritation may develop |
|
Inhalation |
Vapours or aerosols may cause irritation of eyes, nose and respiratory tract |
|
Ingestion |
May cause gastro-intestinal disturbances |

|
Contact with skin |
Remove contaminated clothing immediately and drench affected skin with plenty of water. The wash with soap and water.Seek medical attention if irritation persists. |
|
Contact with eyes |
If substance has got into eyes, immediately wash out with plenty of water for at least 15 minutes.Seek medical attention if irritation persists. |
|
Ingestion |
Never make an unconscious person vomit or drink fluids.Give water or milk to drink.When in doubt or symptoms persist, seek medical attention |
|
Inhalation |
Inhalation is unlikely to occur.Remove patient to fresh air. |
|
General |
In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). |

- Non combustible
- None
- Not flammable. In case of fire use extinguishing media appropriate to surrounding conditions

|
Precautions |
Wear protective clothing as per section 8 |
|
Immediate Actions |
Shut off source of leak if safe to do so |
|
Clean Up Actions |
Flush spill area with copious amounts of water |
|
Special Precautions |
Wear protective clothing as per section 8 No special precautions are required for this product |

|
Handling |
The usual precautions for handling chemicals should be observed |
|
Storage |
Keep only in the original container in a cool, well ventilated place (S3/9/49) Protect from frost |

|
Exposure Limits |
There are no recommended or established controls for this product. |
|
Exposure controls |
No special precautions are required for this product. |
|
Occupational exposure controls |
Wear suitable protective clothing, including eye/face protection and gloves (plastic or rubber are recommended). |

|
Odour |
Odourless |
|
Appearance |
Liquid, Clear |
|
pH |
5-6 at 100 % concentration |
|
Boiling point > |
100 °C at 760 mm /Hg |
|
Vapour pressure - |
not known |
|
Freezing point |
0 °C at 760 mm/Hg |
|
Completely soluble in water |
|
|
Specific gravity (water=1) |
1.05 - 1.12 |
|
Non combustible |
|

No hazardous decomposition products known . Avoid overheating, Keep away from frost.

|
Inhalation |
Inhalation is unlikely to occur |
|
Contact with skin |
In cases of severe exposure, irritation may develop |
|
Contact with eyes |
In cases of severe exposure, redness and irritation may develop |
|
Ingestion |
May cause gastro-intestinal disturbances |
|
Carcinogenicity |
No evidence of carcinogenic effects |

|
Mobility |
Completely soluble in water |
|
Bioaccumulation Potential |
Bioaccumulation of the components in this product is insignificant. |
|
Other Adverse Effects |
Presents little or no hazard to the aquatic environment. |

|
Classification |
EU Waste class |
|
Disposal considerations |
Do not discharge into drains or the environment, dispose to an authorised waste collection point - Disposal should be in accordance with local, state or national legislation |

Not classified as hazardous for transport

|
Classification and labelling |
Not classified as hazardous for users |
|
Risk Phrases |
Not applicable |
|
Safety Phrases |
Not applicable |

The information provided about the product on this Safety Data Sheet has been compiled from knowledge of the individual constituents The data given here is based on current knowledge and experience. This Safety Data Sheet describes the product in terms of safety requirements and does not signify any warranty with regard to the product's properties The data given here only applies when product used for proper application(s). The product is not sold as suitable for other applications - usage in such may cause risks not mentioned in this sheet. Do not use for other application(s) without seeking advice from manufacturer.
DISCLAIMER OF LIABILITY :The information in this SDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness. The conditions or methods of handling, storage, use or disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use or disposal of the product. This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.