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Corrosion Inhibitors for Oil and Gas

Oxygen Scavenger OxyGuard S

Part No: RXSOL-34-6119-250

Generic Name: Used as Oxygen Scavanger for Drilling Rigs

Also known as: Oxygen Scavenger Sodium Sulphite, OXYGEN SCAVENGER SCAV TREAT

Oxygen scavenger for feedwater treatment to help control corrosion caused by dissolved oxygen.

Pack Size:250.00 Kg.Liq

Product Description

This is most common oxygen treatment as a scavengers used to effectively remove dissolved  OXYGEN from your feedwater. By the presence of dissolved oxygen in system, corrosion and pitting caused on metal surface. Removes dissolved oxygen, By acting as an oxygen scavenger.

A fast-acting, catalyzed sodium sulphite (Na₂SO₃) oxygen scavenger for low- and medium-pressure boiler systems. The product reacts stoichiometrically with dissolved oxygen to prevent corrosion in boilers, feed lines, and condensate systems by converting oxygen to inert sulfate.

Technical Specifications

Property Specification
Appearance Clear to pale straw liquid
Specific gravity @ 25 °C ~1.30 – 1.34 (depends on strength)
pH (neat) 8.5 – 10.5 (stabilized alkaline)
Odor Faint sulfurous
Freeze point < 0 °C (varies with strength)
Solubility Completely miscible with water

Product documents & quotation

Request the current SDS and TDS for Oxygen Scavenger OxyGuard S (RXSOL-34-6119-250). Include your quantity, application, delivery location and required date. Availability, pack sizes and lead times are confirmed with your quotation.

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Supplier: RXSOL, Dubai, UAE. Brand: RXSOL.

Dosage & Application

Reaction (overall):
Na₂SO₃ + ½ O₂ → Na₂SO₄

Catalyst accelerates the reaction at lower temperatures and shorter residence times (e.g., in deaerator outlets and feedwater lines)

Power of Oxygen Scavenger OxyGuard-S: powerful stoichiometry: ~7.88 mg/L Na₂SO₃ per 1 mg/L dissolved O₂.
With safety factor (process variability, kinetics), dose 10–12 mg/L Na₂SO₃ per 1 mg/L O₂.
 
Typical operating targets (LP/MP boilers):
 
  • Deaerator outlet O₂: ≤ 7–10 ppb (if DA present)
  • Sulfite residual in boiler water:
  • Normal operation: 20–40 mg/L as Na₂SO₃
  • High risk / wet lay-up: 60–100 mg/L as Na₂SO₃
  • pH (feedwater/boiler): follow your internal treatment program (commonly FW pH 8.5–9.2; boiler water pH 10.5–11.5 depending on pressure).
 
Where to feed:
  • Preferably deaerator storage section or feedwater line upstream of economizer to ensure complete O₂ removal before the boiler.

Example Dose Calculation

Feedwater DO = 0.10 mg/L (100 ppb) at 20 m³/h.
Stoichiometric Na₂SO₃ = 0.10 × 7.88 = 0.788 mg/L.
With 1.3× safety factor → ~1.0 mg/L Na₂SO₃.
At 20 m³/h → 20 g/h Na₂SO₃ (as pure).
Using 38% liquid: 20 / 0.38 ≈ 52.6 g/h (~40 mL/h) (SG 1.32 ⇒ ~30 mL/h by mass; verify on site).
Fine-tune to maintain target sulfite residual in boiler.

Available Pack Sizes

SCAVENGER OXYGEN, OXYGEN SCAVENGER, WATER-BASED DISSOLVED OXYGEN SCAVENGER LIQUID, WATER SOLUBLE SCAVENGER available in 250 Kg Liquid Drum.

Notes

Benefits of using Oxygen Scavenger OxyGuard-S
  • Rapid kinetics with catalyst—effective even at moderate temperatures.
  • Reliable corrosion protection of pre-boiler & boiler circuits.
  • Cost-effective vs. volatile scavengers for LP/MP systems.
  • Easy control by simple sulfite residual testing.
  • Compatible with most phosphate/polymer internal treatments.

Applications

Key Areas of Application of Oxygen Scavenger OxyGuard-S
  • Oxygen removal in low/medium-pressure boilers (typically up to ~65 bar; usage above this pressure is uncommon due to potential sulfate/solids carryover).
  • Hot standby protection to prevent pitting during idle periods i.e. Oilfield Application.
  • Feedwater & deaerator outlets where residual O₂ must be suppressed rapidly.

Additional Details

Industrial Area

Oxygen Scavenger – Sodium Sulphite

Product Description:

Oxygen Scavenger – Sodium Sulphite is a highly effective oxygen scavenging chemical formulated to remove dissolved oxygen from boiler feed water, injection water, and industrial water systems. It rapidly reacts with dissolved oxygen, preventing corrosion in pipelines, boilers, heat exchangers, storage tanks, and water injection systems.

The product is widely used in the oil & gas, power generation, petrochemical, refinery, and water treatment industries to maintain low dissolved oxygen levels and protect critical equipment from oxygen-induced corrosion.

Key Features

  • Rapidly removes dissolved oxygen from water.

  • Prevents corrosion in boilers and water injection systems.

  • Protects pipelines, heat exchangers, and storage tanks.

  • Improves equipment reliability and service life.

  • Suitable for high-pressure and low-pressure boiler systems.

  • Easy to dose and compatible with most water treatment programs.

  • Reduces maintenance and operating costs.

Applications

  • Boiler Feed Water Treatment

  • Water Injection Systems

  • RO Permeate Treatment

  • Condensate Systems

  • Industrial Water Treatment

  • Oil & Gas Production Facilities

  • Power Plants

  • Petrochemical Industries

Typical Specification

Property Specification
Chemical Name Sodium Sulphite
Appearance Clear Liquid / White Powder (as applicable)
Active Content As per customer specification
Function Oxygen Scavenger
Application Boiler & Injection Water Treatment

Performance Requirement

  • Maintains dissolved oxygen (DO) below the specified operating limit.

  • Effectively prevents oxygen-induced corrosion.

  • Suitable for continuous dosing in industrial water treatment systems.

  • Compatible with membrane and boiler water treatment programs (where applicable).

 

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Frequently Asked Questions

How do I order Oxygen Scavenger OxyGuard S?

Quote the product name and part number RXSOL-34-6119-250, quantity, delivery address and required date. RXSOL will confirm availability, packaging, price and delivery terms before you order.

How can I request the SDS and TDS for Oxygen Scavenger OxyGuard S?

Use the document request below and include the product name and part number. Ask for the current supplier Safety Data Sheet (SDS), Technical Data Sheet (TDS) and any batch Certificate of Analysis (CoA) required by your procurement team.

How do I confirm suitability for my application?

Check the current product specification against your application, equipment materials and operating conditions. Product grades and formulations differ; use the supplier documentation for the exact product rather than a general category recommendation.

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