Membrane Cleaner ORG 77 is a specialized acidic membrane cleaner formulated for the effective removal of iron fouling, oxides, hydroxides, and light calcium carbonate deposits from reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) membranes. The product is based on a carefully balanced blend of organic acids, chelating agents, and proprietary buffer salts which maintain a stable pH of approximately 3.6 during use. This unique buffering action ensures consistent cleaning performance, preventing rapid pH drift and maintaining optimum efficiency throughout the cleaning cycle.
Iron fouling is one of the most common causes of reduced membrane performance, leading to decreased permeate flow, reduced salt rejection, and increased differential pressure. Membrane Cleaner ORG 77 penetrates and dissolves iron deposits effectively while dispersing loosened particles and preventing re-precipitation. In addition, its mild acid chemistry provides secondary action against light carbonate scale, making it a versatile cleaner for both iron-affected and lightly scaled systems.
The product is safe for polyamide thin-film composite membranes when used as directed, and is fully compatible with standard membrane cleaning protocols recommended by leading membrane manufacturers.
Application of Membrane Cleaner ORG 77 Iron Cleaning Membrane Cleaner
- Desalination plants (SWRO and BWRO).
- Power plants, boiler make-up, and cooling tower RO pretreatment units.
- Food, beverage, and pharmaceutical water systems.
- Municipal and industrial water treatment plants.
- Any membrane system affected by iron fouling or light carbonate scaling.
- Prepare a 4% w/w solution in chlorine-free permeate water (1 kg ORG-77 per 25 kg water).
- Circulate at ≤35 °C for 2–3 hours, depending on fouling severity.
- Replace solution if it turns red/brown (indicating iron saturation).
- After cleaning, flush system thoroughly with permeate until pH matches inlet water.
- Neutralize spent solution with alkali before disposal.
NOTE: Dosage may vary depending on fouling concentration. Contact your RXSOL representative
| Property | Value |
|---|---|
| Appearance | Clear to light yellow liquid |
| Odor | Mild acidic |
| pH (1% solution) | ~3.6 (buffered) |
| Specific Gravity | 1.20 – 1.25 |
| Solubility | Fully miscible in water |
Mode of Action of Mebrane Cleaner ORG 77
- Organic acids and chelants dissolve and sequester iron deposits.
- Buffer salts stabilize solution pH at 3.6, optimizing cleaning power.
- Surfactant wetting agents enhance penetration into fouling layers.
- Chelated iron remains in solution, preventing re-deposition.
- Carbonate deposits are partially dissolved, restoring membrane activity.
Key Features of Membrane Cleaner ORG 77
- Highly effective against iron oxide and hydroxide fouling.
- Provides secondary cleaning of light calcium carbonate scale.
- Buffered formulation ensures stable pH ~3.6 throughout cleaning.
- Color change indicator – exhausted solution turns red/brown when saturated with iron.
- Compatible with all major RO, NF, and UF membranes.
- Enhances system performance by restoring flow and salt rejection rates.
| Product Name | RXSOL-33-3304-050 |
| Product Type | Membrane Cleaner ORG 77 |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
Stock Point : Mumbai, Gandhidham, Vizag, Chennai, Kolkata, Fujairah, Muscat, Nairobi Kenya, Canada
| Phone | +91 22 65113333 / 5555 / 9999 |
| Fax | +91 22 2781 1318 :::AOH :0091 9821214367 |
| care@rxmarine.com |
| Chemical Name | Cas No # | Range(w/w%) |
|
NITRILOTRIACETIC ACID,TRISODIUM SALT |
5064-31-3 |
0.1-1.0 |
|
N-HYDROXY-ETHYLENEDIAMINE TRIACETIC ACID TRISODIUM salt |
139-89-9 |
15-40 |
|
MONOETHANOLAMINE |
141-43-5 | 5-9 |
| CITRIC ACID | 10-20 | |
| Proprietory Blend Mixuture of Organic and Inorganic Acid with Chelating Agent | ---- | Balanced |
| Skin contact | Primary route of exposure; Severe irritant to the skin |
| eye contact |
Severe irritant to the eyes, possibly corrosive |
| INGESTION EFFECTS |
May cause gastrointestinal irritation with possible nausea, vomiting, abdominal discomfort and diarrhea. |
|
SYMPTOMS OF EXPOSURE: |
Causes irritation of the skin, eyes, and/or respiratory system |
|
SKIN CONTACT |
Wash thoroughly with soap and water. Remove contaminated clothing.Thoroughly wash clothing before reuse. Get medical attention if irritation develops or persists |
|
EYE CONTACT |
URGENT! Immediately flush eyes with plenty of low-pressure water for at least 20 minutes while removing contact lenses. Hold eyelids apart. Get immediate medical attention. |
|
INHALATION |
If nasal, throat or lung irritation develops - remove to fresh air and get medical attention. |
|
INGESTION |
Do not feed anything by mouth to an unconscious or convulsive victim. Do not induce vomiting. Immediately contact physician. |
|
FIRE FIGHTING INSTRUCTIONS |
Fire fighters should wear positive pressure self-contained breathing apparatus |
|
EXTINGUISHING MEDIA |
Dry chemical, carbon dioxide, foam or water |
|
Conditions |
If the product enter in contact with acid or oxidizer product they could be produce hot temperature.None |
|
HAZARDOUS DECOMPOSITION PRODUCTS |
Oxides of carbon, nitrogen and sulfur; hydrogen chloride; ammonia |
|
PROTECTION AND SPILL |
Ventilate area. Use specified protective equipment. Contain and absorb on absorbent material. Place in waste disposal container. Flush area with water. Wet area may be slippery. Spread sand/grit |
|
DISPOSAL INSTRUCTIONS |
Water contaminated with this product may be sent to a sanitary sewer treatment facility,in accordance with any local agreement,a permitted waste treatment facility or discharged under a permit. Product as is - Incinerate or land dispose |
|
HANDLING |
Normal chemical handling |
|
STORAGE |
Keep containers closed when not in use. Protect from freezing |
|
ENGINEERING CONTROLS |
Adequate ventilation to maintain air contaminants below exposure limits. |
|
SKIN PROTECTION |
Rubber, butyl, viton or neoprene gloves -- Wash off after each use. Replace as necessary. |
|
EYE PROTECTION: |
splash proof chemical goggles |
|
Appearance |
Colorless To Amber |
|
Physical State |
Liquid |
| pH | Acidic |
|
Flash Point |
> 200F > 93C |
|
Odor |
Slight |
|
Specific Grav.(70F,21C |
1.197 |
|
Freeze Point (C) |
-5 |
STABILITY: Stable under normal storage conditions.
HAZARDOUS POLYMERIZATION: Will not occur.
INCOMPATIBILITIES: May react with strong oxidizers.
DECOMPOSITION PRODUCTS: oxides of carbon, nitrogen
| Skin Contact | Primary route of exposure; Severe irritant to the skin |
| Eye Contact |
Severe irritant to the eyes, possibly corrosive |
| INGESTION EFFECTS |
May cause gastrointestinal irritation with possible nausea, vomiting, abdominal discomfort and diarrhea. |
|
SYMPTOMS OF EXPOSURE |
Causes irritation of the skin, eyes, and/or respiratory system |
AQUATIC TOXICOLOGY ::: Daphnia magna 48 Hour Static Renewal Bioassay (pH adjusted) LC50= 342; No Effect Level= 250 mg/L Fathead Minnow 96 Hour Static Renewal Bioassay (pH adjusted) LC50= 61.6; No Effect Level= 25 mg/L
BIODEGRADATION ::: BOD-28 (mg/g): 142 , BOD-5 (mg/g): 130 , COD (mg/g): 805 , TOC (mg/g): 242
Please be advised; however, that state and local requirements for waste disposal may be more restrictive or otherwise different from federal regulations. Consult state and local regulations regarding the proper disposal of this material.
|
DOT HAZARD: |
ORS (when container > RQ) |
|
PROPER SHIPPING NAME |
ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S.(DIETHANOLAMINE SOLUTION) 9, NA 3082, PG III, RQ |
N/A
The information contained in this literature is believed to be accurate and is offered in good faith for the benefit of the customer. The company however, can not assume any liability or risk in the use of its chemical product since the conditions of use are beyond our control
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.