RXSOL-19-1524-050 is a Dechlorination product which is frequently used in municipal wastewater, pulp & paper, power, and textile water treatment plants and as a Oxygen scavenger in Boiler water treatment.
RXSOL-19-1524-050 also popuar for preservative in photo developer process and Food additive.
Its chemical reaction gives Flue gas desulfurization and Mild reducing agent in organic synthesis by Efficiently remove traces or excess amounts of bromine, iodine, osmate esters, chromium trioxide, and potassium permanganate
Sodium Bisulfite solution for using as chlorine reducing agent in RO units and for membranes preservation. Acts as Dechlorinating agent is a kind of rapid reaction, is used to remove the residual chlorine in the reverse osmosis water, suitable for all kinds of reverse osmosis membrane.
Sodium Bisulfite 40% Solution (NaHSO3) is a Pale Yellow Liquid.
Sodium bisulfite, sodium bisulphite, sodium hydrogen sulfite. Its molecular formula / chemical formula is NaHSO3.
| Formula | NaHSO3 |
| Molecular Weight | 104 |
| Sodium Bisulfite, wt% (Na2S2O5) | 38.0 - 42.0 |
| Sodium Sulfate, wt% | ≤ 3.5% |
| Solubility (10 % Aquous Soln) | V. S. Hazy to clear solution. |
| pH Value of 5% Solution | 3.5 to 4.5 |
| Specific Gravity @ 25° C | 1.310 – 1.370 |
| Density, lbs/gal @ 25° C | 10.9 - 11.3 |
| Description | Sodium Bisulfite 40% Solution (NaHSO3) is a pale yellow liquid. |
| Standard Packing | 50 Kg. / 250 kg HM HDPE Barrel |
Sodium bisulfite is a food additive with E number E222
Chemical compound with formula NaHSO3.
On additon with water Sodium bisulfite releases sulfur dioxide gas, Which is resulting killing yeast, fungus, and bacteria, roughly 24 hours before fermentation, when added to wines.
It may also be added after fermentation to prevent vinegar production and protect the color and flavor of wine. It kills microbes and in fruit canning, prevents browning.
Sodium Bisulfite is also added to leafy green vegetables to preserve visual freshness of the greens. When adding to recipes to prevent oxidation, strive for 0.1% of weight.
Sodium Bisulfite 40% Solution
Sodium Bisulfite 40% Solution – Manufacturer & Supplier in UAE
Sodium Bisulfite 40% Solution is a concentrated aqueous solution of sodium bisulfite (NaHSO₃), widely used as a reducing agent, dechlorination chemical, oxygen scavenger and water-treatment chemical in industrial, marine and process-water applications.
It is supplied as a ready-to-use liquid solution for applications where controlled reduction of oxidizing agents, particularly residual chlorine, is required.
Sodium Bisulfite 40% Solution – Product Highlights
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Concentration: 40% Sodium Bisulfite Solution
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Chemical formula: NaHSO₃
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Physical form: Liquid solution
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Appearance: Typically clear to pale yellow liquid
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Highly effective reducing agent
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Used for chlorine and oxidant removal
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Suitable for industrial water-treatment applications
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Used in RO pretreatment systems
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Useful for dechlorination of treated water
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Suitable for industrial and marine applications
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Available in bulk and industrial packaging
Major Applications
1. RO Water Treatment
Sodium Bisulfite 40% Solution is commonly used in reverse osmosis (RO) pretreatment to remove residual free chlorine before water reaches polyamide RO membranes.
This is important because free chlorine can damage or degrade chlorine-sensitive RO membrane materials.
2. Dechlorination
The product is widely used for reducing residual chlorine in:
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Potable-water treatment processes
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Industrial wastewater
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Process water
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RO feed water
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Reclaimed water
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Chemical treatment systems
3. Oxygen Scavenging
Sodium bisulfite can act as an oxygen scavenger in suitable water-treatment applications, helping reduce dissolved oxygen in systems where oxygen control is required.
Applications may include selected:
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Boiler-water systems
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Feed-water treatment
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Industrial water circuits
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Process-water systems
The actual treatment method and dosage should be established according to water chemistry and the applicable technical specification.
4. Industrial Chemical Processing
Sodium Bisulfite Solution is also used as a reducing agent in various chemical and industrial processes where controlled reduction is required.
5. Marine Applications
Sodium bisulfite can be used in marine and shipboard water-treatment applications, particularly where dechlorination or reduction of oxidizing residuals is required.

| Porduct Name | Sodium Bisulphite 40 Percent Solution |
| Part Number | RXSOL-40-1524-030 |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
Branch : Kandla, Mumbai , Chennai, Vizag, Kolkata, UAE , OMAN , CANADA and KENYA
| Phone | +91 22 20871200 - 1400 |
| Fax | +91 22 27612100 :::AOH :0091 9821214367 |
| mail@rxmarine.com | |
| Website | www.rxmraine.com |

| Product name | Cas No | EC No | Weight | Formula |
| Sodium bisulfite solution | 7631-90-5 | 231-548-0 | 104,06 g/mol | NaHSO3 |

| Signal Word | Warning |
| Hazard Statements | H302 Harmful if swallowed. H319 Causes serious eye irritation. |
| Precautionary statements | P264 Wash skin thoroughly after handling.P280 Wear eye protection/ face protection. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P337 + P313 If eye irritation persists: Get medical advice/ attention. |
| Classification of the substance or mixture | No data available |
| Supplemental Hazard Statements | No data available |
| Other hazards | This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.The substance/mixture does not contain components considered to have endocrine disrupting properties according to REACH Article 57(f) or Commission Delegated regulation (EU) 2017/2100 or Commission Regulation (EU) 2018/605 at levels of 0.1% or higher |

| General advice | Show this material safety data sheet to the doctor in attendance |
| If inhaled | After inhalation fresh air. |
| Eye Contact | After eye contact: rinse out with plenty of water. Remove contact lenses. |
| Swallowed | After swallowing: immediately make victim drink water (two glasses at most). Consult a physician. 4.2 Most import |
| Skin Contact | In case of skin contact Take off immediately all contaminated clothing. Rinse skin with water/ shower. Call a physician immediately |
| Inhalation | No data available |
| Ingestion | No data available |
| Most important symptoms and effects, both acute and delaye | The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11 |
| Indication of any immediate medical attention and special treatment needed | No data available |

| Flammability | No data available |
| Suitable extinguishing media | Use extinguishing measures that are appropriate to local circumstances and the surrounding environment. |
| Unsuitable extinguishing media | For this substance/mixture no limitations of extinguishing agents are given. |
| Special hazards arising from the substance or mixture | Sodium oxides Sulfur oxides Sulfur oxides Sodium oxides Not combustible. Ambient fire may liberate hazardous vapours. |
| Further information | Suppress (knock down) gases/vapors/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system. . |
|
Hazardous combustion products |
No data available |
| Advice for firefighters | In the event of fire, wear self-contained breathing apparatus. |
| Protective Equipment | No data available |
| Specific Hazards Arising from the Chemical | No data available |

| Personal precautions, protective equipment and emergency procedures | Advice for non-emergency personnel: Avoid inhalation of dusts. Evacuate the danger area, observe emergency procedures, consult an expert. For personal protection see section 8. |
| Spillage | No data available |
| Personal Protection | No data available |
| Enviromental Precaution | Do not let product enter drains. Risk of explosion. |
|
Methods and materials for containment and cleaning |
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up dry. Dispose of properly. Clean up affected area. Avoid generation of dusts. |
| Reference to other sections | For disposal see section 13. |

| Advice on protection against fire and explosion | No data available |
| Incompatible materials | No data available |
| Hygiene measures | No data available |
| Advice on safe handling | For precautions see section 2.2. |
| Conditions for safe storage including any incompatibilities |
No data available |
| Storage conditions |
Tightly closed. Dry. Do not store near acids. Air and moisture sensitive. |
| Storage class | Storage class (TRGS 510) 12 Non Combustible Liquids |
| Specific end use(s) | Apart from the uses mentioned in section 1.2 no other specific uses are stipulated |
| Advice on general occupational hygiene | No data available |

| Exposure controls | Personal protective equipment |
| Engineering Control | No data available |
| Eye/face protection | Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Safety glasses |
| Body Protection | Protective clothing. |
| Skin protection | This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell, Internet: www.kcl.de). Full contact Material: butyl-rubber Minimum layer thickness: 0,7 mm Break through time: 480 min Material tested:Butoject® (KCL 898) This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D-36124 Eichenzell, Internet: www.kcl.de). Splash contact Material: Nitrile rubber Minimum layer thickness: 0,4 mm Break through time: 120 min Material tested:Camatril® (KCL 730 / Aldrich Z677442, Size M) |
| Respiratory protection |
Required when vapours/aerosols are generated. Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system. Recommended Filter type: Filter type ABEK The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
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| Other Protection Measure | No data available |

| Physical state | Liquid |
| Colour | No data available |
| Odour | No data available |
| Odor Threshold | No data available |
| pH | No data available |
| Melting Point | No data available |
| Boiling Point | No data available |
| Flash Point | No data available |
| Evaporation Rate | No data available |
| Flammability (solid, gas) | No data available . |
| Explosive limits | No data Available |
| Upper/lower flammability or explosive limits | No data available |
| Autoignition temperature | No data available |
| Decomposition temperature | No data available |
| Vapour pressure | No data available |
| Viscosity | No data available |
| Density | No data available |
| Relative Density | No data available |
| Specific Gravity | No data available |
| Partition coefficient | No data available |
| Explosive properties | No data available |
| Solubility | at 20 °C soluble |
| Ignition temperature | No data available |
| Particle characteristics | No data available |

| Reactivity | Contact with acids liberates toxic gas |
| Chemical stability | The product is chemically stable under standard ambient conditions (room temperature) |
| Possibilityof hazardous reactions | Generates dangerous gases or fumes in contact with: Acids |
| Conditions to avoid | No data available |
| Incompatible materials |
Strong oxidizing agents, Strong acids
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| Hazardous decomposition products | In the event of fire: see section 5 |

| Acute toxicity | LD50 Oral - Rat - male and female - 1.540 mg/kg (OECD Test Guideline 401) Acute toxicity estimate Oral - 1.540 mg/kg (Calculation method) LC50 Inhalation - Rat - male and female - 4 h - > 5,5 mg/l - dust/mist (OECD Test Guideline 403) Remarks: (ECHA) The value is given in analogy to the following substances: sodium sulphite LD50 Dermal - Rat - male and female - > 2.000 mg/kg (OECD Test Guideline 402)The value is given in analogy to the following substances: sodium sulphite |
| Skin corrosion/irritation | Skin - Rabbit Result: No skin irritation (OECD Test Guideline 404) Remarks: (in analogy to similar products) |
| Serious eye damage/irritation | Causes serious eye irritation. (in analogy to similar products) |
| Respiratory or skin sensitization | Local lymph node assay (LLNA) - Mouse Result: negative (OECD Test Guideline 429) Remarks: (ECHA) The value is given in analogy to the following substances: sodium sulphite |
| Carcinogenicity | No data available |
| Germ cell mutagenicity | Species Rat - male Result: negative (ECHA) |
| Reproductive toxicity | Weight of evidence does not support classification for reproductive toxicity |
| Specific target organ toxicity - single exposure |
No data available
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| Additional Information | The substance/mixture does not contain components considered to have endocrine disrupting properties according to REACH Article 57(f) or Commission Delegated regulation (EU) 2017/2100 or Commission Regulation (EU) 2018/605 at levels of 0.1% or higher. Repeated dose toxicity - Rat - male and female - Oral Remarks: (ECHA) burning sensation, Cough, wheezing, laryngitis, Shortness of breath, Headache, chest pain To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Other dangerous properties can not be excluded. Handle in accordance with good industrial hygiene and safety practice. |

| Persistence and degradability | The methods for determining the biological degradability are not applicable to inorganic substances. |
| Toxicity to fish | static test LC50 - Leuciscus idus (Golden orfe) - > 215 - 464 mg/l - 96 h Remarks: (ECHA) The value is given in analogy to the following substances: potassium sulfite |
| Toxicity to daphnia and other aquatic invertebrates | static test EC50 - Daphnia magna (Water flea) - 89 mg/l - 48 h Remarks: (ECHA) The value is given in analogy to the following substances: sodium metabisulphite |
| Toxicity | No data available |
| Toxicity to bacteria | static test EC50 - activated sludge - > 1.000 mg/l - 3 h (OECD Test Guideline 209) Remarks: (ECHA) The value is given in analogy to the following substances: sodium sulphite |
| Toxicity to algae | static test ErC50 - Desmodesmus subspicatus (green algae) - 43,8 mg/l - 72 h (OECD Test Guideline 201) Remarks: (ECHA) The value is given in analogy to the following substances: sodium metabisulphite |
| Products Biodegradation | No data available |
| Mobility in soil | No data availalble |
| Results of PBT and vPvB assessment | This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher. |
| Endocrine disrupting properties | The substance/mixture does not contain components considered to have endocrine disrupting properties according to REACH Article 57(f) or Commission Delegated regulation (EU) 2017/2100 or Commission Regulation (EU) 2018/605 at levels of 0.1% or higher. |
| Other adverse effects | No data available |

| Product | No data available |
| Contaminated packaging | No data available |
| Waste treatment Method | No data available |

| UN number | ADR/RID:- | IMDG:- |
IATA:- |
| UN proper shipping name | ADR/RID:Not dengerous goods | IMDG:Not dengerous goods | IATA:Not dengerous goods |
| Transport hazard class(es) | ADR/RID:- | IMDG:- | IATA:- |
| Packaging group | ADR/RID:- | IMDG:- | IATA:- |
| Environmental hazards | ADR/RID:No | IMDG:No | IATA:No |
| Special precautions for user | No data available | ||
| Further information | No data available |

| Safety, health and environmental regulations/legislation specific for the substance or mixture | This material safety data sheet complies with the requirements of Regulation (EC) No. 1907/2006. |
| Other regulations | Observe work restrictions regarding maternity protection in accordance to Dir 92/85/EEC or stricter national regulations where applicable. Take note of Dir 94/33/EC on the protection of young people at work |
| Chemical Safety Assessment | A Chemical Safety Assessment was not carried out for this substance. |

| Other Information |
The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and weassume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shall be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if Rx Marine International has been advised of the possibility of such damages. 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. |