Highly effective scale inhibitor designed to perform across a broad spectrum of water qualities, ensuring reliable protection against scale formation and improved system efficiency.
ORG - 191 t (Membrane Antiscalant) combines the product reliability of ORG - 191 t (Membrane Antiscalant) for advanced monitoring and control. ORG - 191 t (Membrane Antiscalant) is a highly effective scale inhibitor whose active components were developed to treat reverse osmosis (RO) systems. ORG - 191 t (Membrane Antiscalant) has shown for over 20 years excellent performance against the following scalants: calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride, silica and iron.
RXSOL Membrane Antiscalant ALKA 191T : RO ANTISCALANT
-
Minimizes carbonate and sulphate scaling, reducing system fouling and lowering cleaning costs.
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Eliminates the need for acid dosing in many applications, improving safety and simplifying operations.
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Compatible with all membrane types based on polyamide chemistries, ensuring broad application flexibility.
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Acts as an effective iron sequestrant, preventing iron deposition and fouling.
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More stable and effective than sodium hexametaphosphate and most conventional polymeric antiscalants, delivering superior long-term performance.
ORG - 191 t (Membrane Antiscalant) is used when the silica level in the brine is less than 185 mg/l at a brine pH of 7.5 and temperature 25oC (77oF). For higher silica levels, the recommended product is ORG - 191 t (Membrane Antiscalant).
ACTIVE CONSTITUENTS
Proprietary Sequestering Agent
COMPATIBILITY
This product has Standard 60 in the reverse osmosis antiscalant category.
MATERIALS OF COMPATIBILITY
| Compatible | Not Compatible |
| Stainless Steel 304 | Brass |
| CPVC Piping | Neoprene* |
| Polyethylene | Hypalon* |
| Polypropylene | Buna-N* |
| Plasite 4300 | Polyurethane |
| Plasite 7122 |
EPDM* Viton |
All membrane elements based on Polyamide chemistries including
Thin Film Composite (TFC) membranes when used as directed
* O-rings are acceptable for static applications. If fitting is opened, O-ring must be replaced.
DOSAGE AND FEEDING
ORG - 191 t (Membrane Antiscalant) be fed continuously to minimize precipitation of scale and fouling of RO and nanofiltration membranes. The feedpoint location should be as close to the RO membrane as practical but one that ensures good mixing with the feedwater prior to entering the RO system. Typically, this is before the cartridge filters.
All new installations of ORG - 191 t (Membrane Antiscalant) should begin with a 2 week monitoring phase during which current operating conditions should be maintained (i.e. setting pumps manually based on stroke length and frequency). After this evaluation period, TRASAR-based control of the system should be instituted using the recommended pump.
It is preferred to feed ORG - 191 t (Membrane Antiscalant) neat via a closed feed system to prevent contamination from foreign material (a closed feed system being defined as a system in which fluid is moved from a closed storage vessel into a treated media without exposure to the atmosphere, except through normal venting or pressure relief devices).
ORG - 191 t (Membrane Antiscalant) can be diluted using RO permeate (only) following these guidelines:
1. Use RO permeate for dilution.
1. Prepare a fresh antiscalant solution every 3-5 days.
1. Inspect the antiscalant day tank before adding the new solution. If needed, the antiscalant tank should be cleaned prior to filling.
1. Dilution rates up to a factor 10 are typically applied. Dilution factors higher than 10 will require more attention with respect to the condition of the antiscalant tank (cleaning) and preparation of a new solution (every 1-3 days).
1. NaOH can be added to the dilution to increase the pH to 10-11. This is especially recommended for warm environments to prevent bio-growth.
ORG - 191 t (Membrane Antiscalant) dosage is dependent on feedwater chemistry, membrane type, and system operating parameters (e.g., recovery, temperature and pressure). These parameters determine the potential foulant that is likely to foul the membrane elements.
To determine the optimum product dosage for your system, it is recommended that you use the RO Optimizer chemical projection computer program. This program will select the appropriate scale inhibitor treatment program and calculate the recommended dosage based on the RO design and operation as well as feedwater or brine chemistry. This program will do all calculations for you easily and automatically.
CONSEQUENCES OF OVERFEED
Overfeed of ORG - 191 t (Membrane Antiscalant) will result in a higher chemical cost.
CONSEQUENCES OF UNDERFEED
Underfeed of ORG - 191 t (Membrane Antiscalant) will result in poor scale inhibition. This will lead to fouled RO membranes, and reduced system performance and/or premature membrane replacement. In RO units, scaling is typically seen in the tail-end elements that have the highest reject concentration (4:1 for a 75% recovery system).
PHYSICAL & CHEMICAL PROPERTIES
These properties are typical. Refer to the Material Safety Data Sheet (MSDS) SECTION 9, for the most current data.
| Color: | Clear, Yellow |
| Form: | Liquid |
| Odor: | Slight ammonia smell |
| Density: | 11.33 lb/gal |
| Specific Gravity @ 25oC (77oF): | 1.36 |
| pH (Neat): | 10.5 |
| Freeze-Thaw Recovery: | Complete |
| Viscosity @ 25oC (77oF): | 20 cp |
| Flash Point (PMCC): | None |
| Solubility in Water: | Complete |
| Freeze Point: | 32oF (0oC) |
| Volatile Organic Compounds (VOC): | 0% |
RXSOL Membrane Antiscalant ALKA 191T is specially designed for use in Reverse Osmosis (RO) systems as a high-performance antiscalant, providing effective protection against scale formation and membrane fouling.
RXSOL Membrane Antiscalant ALKA 191T, enabling precise dosage monitoring and control to safeguard the system from both under-dosing and over-dosing, ensuring optimum performance and extended membrane life.
ENVIRONMENTAL AND TOXICITY DATA
Refer to SECTION 11 and 12 of the Material Safety Data Sheet (MSDS) for all available mammalian and aquatic toxicity information.
| ppm/ppm product | |
| Biological Oxygen Demand (5-day BOD5) | Not Available |
| Chemical Oxygen Demand (COD) | Not Available |
| Total Organic Carbon (TOC) | Not Available |
SAFETY AND HANDLING
Before using ORG - 191 t (Membrane Antiscalant) please refer to SECTION 8 of the Material Safety Data Sheet (MSDS) for proper personal protective equipment (PPE) and SECTION 3 for health effects.
STORAGE
ORG - 191 t (Membrane Antiscalant) has a suggested in-plant storage limit of one year. The suggested maximum storage temperature is 100oF (38oC). Refer to the Material Safety Data Sheet (MSDS), SECTION 7, for the most current data.
RXSOL Membrane Antiscalant ALKA 191T is a high-performance threshold antiscalant designed to stabilize a wide range of supersaturated salt solutions, helping to prevent scale formation and maintain efficient RO system operation.
It incorporates to improve the reliability of scale control by ensuring accurate and consistent dosing, thereby enhancing membrane protection and system performance.
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

| Product Name | RXSOL-33-3321-030 |
| Product Type | ORG - 191 t (Membrane Antiscalant) |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
Stock Point : Muscat. Fujairah, Mumbai, Kandla, Kolkata, Vizag, Chennai, Canada
| Phone | +91 22 27815540 / 41 / 42 |
| Fax | +91 22 2781 1318 :::AOH :0091 9821214367 |
| mail@rxmarine.com |

5064-31-3 NITRILOTRIACETIC ACID,TRISODIUM SALT (NTA.3NA) 0.1-1.0
50-00-0 FORMALDEHYDE 0.1-1.0
102-71-6 TRIETHANOLAMINE 15-40
64-02-8 ETHYLENE DIAMINE TETRAACETIC ACID, TETRASODIUM SALT 15-40
141-43-5 MONOETHANOLAMINE 7-13
111-42-2 DIETHANOLAMINE 3-7
2002-24-6 MONOETHANOLAMINE HYDROCHLORIDE 1-5
119345-04-9 BENZENE, 1,1’-OXYBIS-,TETRAPROPYLENE DERIVATIVES, 1-5

EMERGENCY OVERVIEW
CAUTION ::: May cause irritation with prolonged contact.
Do not get in eyes, on skin, on clothing. Do not take internally. Use with adequate ventilation.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. After contact with skin, wash immediately with plenty of water.
Wear suitable protective clothing.
May evolve oxides of carbon (COx) under fire conditions. May evolve oxides of nitrogen (NOx) under fire conditions.
PRIMARY ROUTES OF EXPOSURE :
Eye, Skin
HUMAN HEALTH HAZARDS - ACUTE :
EYE CONTACT : May cause irritation with prolonged contact.
SKIN CONTACT : May cause irritation with prolonged contact.
INGESTION : May cause gastrointestinal irritation.
INHALATION : May cause irritation of mucous membrances.
SYMPTOMS OF EXPOSURE :
Acute: A review of available data does not identify any symptoms from exposure not previously mentioned.
Chronic :A review of available data does not identify any symptoms from exposure not previously mentioned.
AGGRAVATION OF EXISTING CONDITIONS : A review of available data does not identify any worsening of existing conditons.
HUMAN HEALTH HAZARDS - CHRONIC : No adverse effects expected other than those mentioned above.

| EYE CONTACT | Immediately flush eye with water for at least 15 minutes while holding eyelids open. If symptoms persist, call a physician. |
| SKIN CONTACT | Immediately flush with plenty of water for at least 15 minutes. If symptoms persist, call a physician. |
| INGESTION | Do not induce vomiting without medical advice. If conscious, washout mouth and give water to drink. If symptoms develop, seek medical advice. |
| INHALATION | Remove to fresh air, treat symptomatically. If symptoms develop, seek medical advice. |
| NOTE TO PHYSICIAN | Based on the individual reactions of the patient, the physician's judgement should be used to control symproms and clinical condition. |

| FLASH POINT | None |
| EXTINGUISHING MEDIA | Use extinguishing media appropriate for surrounding fire. This product would not be expected to burn unless all the water is boiled away. The remaining organics may be ignitable. |
| FIRE AND EXPLOSION HAZARD | May evolve oxides of carbon (COx) under fire conditions. May evolve oxides of nitrogen (NOx) under fire conditions. |
| SPECIAL PROTECTIVE EQUIPMENT FOR FIRE FIGHTING | In case of fire, wear a full face positive- pressure self contained breathig apparatus and protective suit. |

PERSONAL PRECAUTIONs:
Restrict access to area as appropriate until clean-up operations are complete. Use personal protective equipment recommended in section 8
(Exposure Controls/Personal Protection). Stop or reduce any leaks if it is safe to do so. Do not touch spilled material. Ventilate spill area if possible.
METHODS FOR CLEANING UP:
SMALL SPILLS: Soak up spill with absorbent material.Place residues in a suitable,covered, properly labeled container. Wash affected area.
LARGE SPILLS: Contain liquid using absorbent material,by digging trenches or by diking. Reclaim into recovery or salvage drums or tank truck for proper disposal. Contact an approved waste hauler for disposal of contaminated recovered material. Dispose of material in compliance with regulations indicated in section 13 Disposal Considerations).
ENVIRONMENTAL PRECAUTIONS:
Do not contaminate surface water.,Do not allow material to contaminate ground water system.,Prevent material from entering sewers or waterways.

HANDLING :
Do not take internally. Ensure all containers are labelled. Keep the containers closed when not in use. Avoid eye and skin contact. Keep away from acids and oxidizing agents.
STORAGE CONDITIONS :
Store the containers tightly closed.
SUITABLE CONSTRUCTION MATERIAL:
HDPE (high density polyethylene), Stainless steel 304, Compatibility with Plastic Materials can vary; we therefore recommend that compatibility is tested prior to use.

| OCCUPATIONAL EXPOSURE LIMITS | This product does not contain any substance that has an established exposure limit. |
| ENGINEERING MEASURES | General ventilation is recommended. Local exhaust ventilation may be necessary when dusts or mists are generated. |
| RESPIRATORY PROTECTION | If significant mists, vapors or aerosols are generated an approved respirator is recommended. |
| HAND PROTECTION | Nitrile gloves, Butyl gloves, PVC gloves, Neoprene gloves |
| SKIN PROTECTION | Wear standard protective clothing |
| EYE PROTECTION | Wear chemical splash goggles. |
| HYGIENE RECOMMENDATIONS | Keep a safety shower available. If clothing is contaminated, remove clothing and thoroughly wash the affected area. Launder contaminated clothing before reuse. Keep an eye wash fountain available. |
| HUMAN EXPOSURE CHARACTERIZATION | Based on our recommended product application and personal protective equipmen, the potential human exposure is : LOW |

| PHYSICAL STATE | Liquid |
| APPEARANCE | Yellow |
| ODOR | Ammoniacal |
| SPECIFIC GRAVITY | 1.36 |
| DENSITY | 11.33 lb/gal |
| SOLUBILITY IN WATER | Complete |
| pH (100%) | 10.5 |
| OCTANOL/WATER COEFFICIENT (log Kow) | 3.5 |
| VOC CONTENT | 0 % Calculated |
Note : These physical properties are typical values for this product and are subject to change.

| STABILITY | Stable under normal conditions. |
| HAZARDOUS POLYMERIZATION | Hazardous polymerization will not occur. |
| CONDITIONS TO AVOID | Freezing temperatures. |
| MATERIALS TO AVOID | Strong oxidizing agents Strong acids |
| HAZARDOUS DECOMPOSITION PRODUCTS : | Under fire conditions : oxides of carbon, Oxides of nitrogen |

The following results are for the product.
ACUTE ORAL TOXICITY :
Species LD50 Test Descriptor
Rat > 17,800 mg/kg Active Substance
Rating : Non-Hazardous
ACUTE DERMAL TOXICITY:
Species LD50 Test Descriptor
Rabbit >15,800 mg/kg Product
Rating : Non-Hazardous
PRIMARY SKIN IRRITATION :
DraiZe Score Test Descrip:or
2.5 / 8.0 Product
Rating : Slightly irritating
PRIMARY EYE IRRITATION :
Draize Score Test Descrip:or
0/110.0 Product
Rating : Practically non-irritating
SENSITIZATION:
This product is not expected to be a sensitizer.
CARCINOGENICITY :
None of the substances in this product are listed as carcinogens by the International Agency for Research on Cancer (IARC), the national Toxicology Program (NTP) or the American Conference of Governmental Industrial Hygienists (ACGIH).
HUMAN HAZARD CHARACTERIZATION:
Based on our hazard characterization,the potential human hazard is: low

ECOTOXICOLOGICAL EFFECTS :
The following results are for the product.
ACUTE FISH RESULTS :
| Species | Exposure | LC50 | Test Descriptor |
| Rainbow Trout | 96 hrs | >959 mg/l | Product |
| Sheepshead Minnow | 96 hrs | >1000 mg/l | Product |
| Bluegill Sunfish | 96 hrs | >300 mg/l | |
| Channel Catfish | 96 hrs | 1212 mg/l |
ACUTE INVERTEBRATE RESULTS :
| Species | Exposure | LC50 | EC50 | Test Descriptor |
| Daphnia magna | 48 hrs | 863 mg/l | Product | |
| Grass Shrimp | 96 hrs | >1.000 mg/l | Product |
Rating : Essentially non-toxic
AQUATIC PLANT RESULTS :
| Species | Exposure | EC 50/LC50 | Test Descriptor |
| Green Algae (Selenastrum Capricornutum) | 96 hrs | 20 mg/l |
Rating:
AVIAN RESULTS :
| Species | Exposure | LC500 | Test Descriptor |
| Bobwhite Quail | 14 Days | >2510 mg/kg |

If this product becomes a waste, it is not a hazardous waste as defined by the Resource Conservation and Recovery. As a non-hazardous waste, it is not subject to federal regulation. Consult state or local regulation for any additional handling, treatment or disposal requirements. For disposal, contact a properly licensed waste treatment, storage, disposal or recycling facility.

The information in this section is for reference only and should not take the place of a shipping paper (bill of lading) specific to an order. Please note that the proper Shipping Name / Hazard Class may vary by packaging, properties, and mode of transportation. Typical Proper Shipping Names for this product are as follows.
LAND TRANSPORT:
Proper Shipping Name : PRODUCT IS NOT REGULATED DURING
TRANSPORTATION
AIR TRANSPORT (ICAO/IATA) :
Proper Shipping Name : PRODUCT IS NOT REGULATED DURING
TRANSPORTATION
MARINE TRANSPORT (IMDG/IMO) :
Proper Shipping Name : PRODUCT IS NOT REGULATED DURING
TRANSPORTATION

NA

Due to our commitment to product stewardship, we have evaluated the human and environmental hazards and exposures of this product. Based on our recommended use of this product, we have characterzied the product's genral risk. This information should provide assistance for your own risk management practices. We have evaluated our product's risk as follows:
The human risk is : Low
The environmental risk is : Low
Any use inconsistent with ourrecommendations may affect the risk characterization. our sales representative will assist you to determine risk management process.
This product material safety data sheet provides health and safety information. The product is to be used in application consiste with our product literature. Individuals handling this product should be informed of the recommended safety precautions and should have access to this information. For any other uses, exposures should be evaluated so that appropriate handling practices and training programs can be established to insure safe workplace operations.
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.