Overview
Potassium molybdate (CAS 13446-49-6 ), also known as dipotassium molybdate, is an inorganic molybdenum salt used across industrial and agricultural sectors primarily as a corrosion inhibitor and micronutrient source.
Its solubility and molybdenum content make it a preferred form for applications requiring precise dosing in aqueous systems. In water treatment and industrial cooling systems, it functions as an anodic corrosion inhibitor.
It protects metal surfaces in recirculating water circuits where scale and oxidation control are critical. Agriculture and specialty fertilizer manufacturers use it as a molybdenum micronutrient source in foliar sprays.
Soil amendment formulations targeting molybdenum-deficient crops also utilize this salt. In mining and metals processing, it is used in flotation reagent systems and as a component in metal surface treatment chemistries.
Industrial and institutional cleaning formulations incorporate it where corrosion protection of metal substrates during cleaning cycles is a requirement. Potassium molybdate is supplied as a white crystalline powder or granular solid.
Technical and reagent-grade specifications are the most commonly available, with purity levels typically at 98% or higher. Packaging ranges from laboratory quantities to bulk industrial supply, depending on the application volume.
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Physical Properties
| Melting Point | 920 °C |
| Density | 2,3 g/cm 3 |
| Appearance | White, deliquescent, microcrystalline powder.Soluble in water; insoluble in alcohol. |
| Color | White |
| Odor | wh. odorless powd. |
| Form | Powder |
| Water Solubility | Soluble in water. Insoluble in alcohol |
Safety & Handling
Warning GHS07 Hazard Statements H315 H315 H319 H319 H335 H335 Precautionary Statements P261 P261 P264 P264 P271 P271 P280 P280 P319 P319 P321 P321 P405 P405 P501 P501 P264+P265 P264+P265 P302+P352 P302+P352 P304+P340 P304+P340 P332+P317 P332+P317 P337+P317 P337+P317 P362+P364 P362+P364 P403+P233 P403+P233 P305+P351+P338 P305+P351+P338
Trade & Regulatory
| HS Code | 2841700090 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 13446-49-6
- EC Number
- 236-599-2
- Mol. Weight
- 238.14
- HS Code
- 2841700090
- Category
- Salts & Minerals