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What Is Sodium Molybdate? Uses, Properties, and Industrial Applications
Sodium molybdate is an inorganic chemical compound widely used as a corrosion inhibitor, micronutrient fertilizer, catalyst, and industrial additive. It is valued for its stability, water solubility, and effectiveness in both industrial and agricultural applications.
What Is Sodium Molybdate?
Sodium molybdate is the sodium salt of molybdic acid, typically available as a white crystalline powder. Its most common commercial form is sodium molybdate dihydrate (Na₂MoO₄·2H₂O). It is primarily used where molybdenum is required as a functional or nutritional element, especially in corrosion control systems, fertilizers, and chemical manufacturing.
Chemical Properties of Sodium Molybdate
- Chemical Name: Sodium Molybdate
- Chemical Formula: Na₂MoO₄
- Common Form: Sodium molybdate dihydrate
- Appearance: White crystalline powder
- Solubility: Highly soluble in water
- Stability: Stable under normal storage conditions
These properties make sodium molybdate easy to dose, transport, and apply in both liquid and solid formulations.
What Is Sodium Molybdate Used For?
1. Corrosion Inhibitor (Primary Use)
Sodium molybdate is widely used as a non-toxic corrosion inhibitor in:
- Closed-loop cooling systems
- Industrial water systems
- Boiler water treatment
- HVAC systems
It forms a protective passive layer on metal surfaces, helping prevent corrosion without the environmental risks associated with chromates.
2. Agriculture & Fertilizers
In agriculture, sodium molybdate is used as a micronutrient source of molybdenum, which is essential for:
- Nitrogen fixation in legumes
- Enzyme activation in plants
- Improved crop yield and plant health
It is commonly applied in soil treatments and foliar sprays.
3. Chemical & Industrial Manufacturing
Sodium molybdate is also used in:
- Catalyst production
- Pigments and dyes
- Lubricant additives
- Metal finishing processes
Its chemical stability makes it suitable for high-performance industrial formulations.
4. Water Treatment Applications
In water treatment systems, sodium molybdate is preferred as an environmentally safer alternative to toxic corrosion inhibitors, especially where discharge regulations are strict.
Benefits of Sodium Molybdate
- Environmentally friendly corrosion control
- Highly effective at low concentrations
- Water-soluble and easy to apply
- Versatile across multiple industries
- Long shelf life in powder form
Is Sodium Molybdate Safe?
When handled correctly, sodium molybdate is considered low-toxicity compared to many traditional corrosion inhibitors. However:
- Avoid inhalation of dust
- Use protective gloves and eye protection
- Follow MSDS guidelines for handling and storage
Buy Sodium Molybdate in South Africa
If you are sourcing sodium molybdate for industrial, agricultural, or water treatment use, BRF SA supplies high-quality sodium molybdate suitable for commercial and industrial applications.👉 View Product Page:
https://brfsachem.com/product/sodium-molybdate/The product is available in bulk quantities with a reliable supply across South Africa and Southern Africa.
Frequently Asked Questions
What is sodium molybdate made of?
Sodium molybdate is made from sodium, molybdenum, and oxygen, forming a stable inorganic salt.
What is sodium molybdate used for in water treatment?
It is used mainly as a corrosion inhibitor to protect metal surfaces in closed-loop systems.
Is sodium molybdate the same as ammonium molybdate?
No. Both supply molybdenum, but they differ in chemical composition, solubility behavior, and industrial use.