Sodium BiSulfite 40% Liquid

Product Category

Inorganic Chemical – Reducing Agent / Antioxidant Solution

Description

Sodium Bisulfite Liquid 40% is a clear to yellowish aqueous solution with a strong sulfur dioxide odor. It functions primarily as a reducing agent, preservative, and antioxidant. It is widely used to remove dissolved oxygen, control oxidation, and prevent microbial growth in industrial processes.

Applications

• Water Treatment - Oxygen scavenger in boiler feed water and cooling water systems

• Oil & Gas - Removes dissolved oxygen in drilling and production fluids

• Food & Beverage - *Preservative & anti-browning agent (regulated use)

• Pulp & Paper - Bleaching agent, pitch control

• Photography - Fixing bath component (traditional applications)

• Textile - Bleaching and dechlorination agent

• Chemical Processing - Reducing agent for chemical reactions, sulfur dioxide source

• Leather - Anti-microbial and anti-tanning agent

* Food-grade versions only where permitted by regulations.

Technical Details

Appearance - Clear to yellowish liquid

Active Content - ~40% Sodium Bisulfite (NaHSO₃)

Specific Gravity - ~1.30 – 1.34 @ 25°C

pH - 3.5 – 5.5

Odor - Sulfur dioxide smell

Solubility - Completely soluble in water

Chemical Formula - NaHSO₃

Function - Reducing agent / oxygen scavenger / preservative

Packaging

• 30 L / 50 L / 200 L HDPE drums

• 1000 L IBC tanks

• Bulk tankers (on request)

Storage & Handling

Storage

• Store in a cool, well-ventilated area

• Keep container tightly closed and away from heat and sunlight

• Avoid contact with acids (releases SO₂ gas)

• Protect from contamination and air exposure to prevent oxidation

Shelf Life

• Typically 6 months under proper storage conditions

Handling & Safety

• Use PPE: gloves, goggles, face shield, protective clothing

• Avoid inhalation of vapors and direct contact with skin/eyes

• Provide adequate ventilation

• Do not mix with acids or oxidizing agents

• Handle with spill containment measures

First Aid

• Skin contact: Wash with plenty of water

• Eye contact: Rinse immediately and seek medical attention

• Inhalation: Move to fresh air