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Powder calcium bromide
Anhydrous or dihydrate calcium bromide powder for mixing brine on site, at the density you need, without paying to ship water.
- CaBr₂anhydrous, 199.89 g/mol
- CaBr₂·2H₂Odihydrate, 235.92 g/mol
- Bags · big bagspacking options
Anhydrous or dihydrate
Both forms are white, crystalline and strongly hygroscopic: they pull water out of the air and cake if left open. The dihydrate already carries two molecules of water per formula unit, so you need about 18% more powder for the same amount of CaBr₂.
- Anhydrous
- CaBr₂ · 199.89 g/mol
- Dihydrate
- CaBr₂·2H₂O · 235.92 g/mol
- Appearance
- White crystalline powder or granules
- Solubility
- 143 g / 100 mL water at 20 °C
- Packing
- Bags, big bags; other sizes on request
Mixing arithmetic
A 52% CaBr₂ solution at 1.70 g/cm³ contains 0.52 × 1,700 = 884 kg CaBr₂ per m³. To make one cubic metre you need about 884 kg of anhydrous powder (about 1,043 kg of dihydrate) and the rest water by mass, around 816 kg.
- Add powder to water slowly, with agitation: dissolving releases heat.
- Let the brine cool, then check density at a known temperature and correct.
- Filter to the clarity your programme requires before pumping.
These figures are a planning aid. Final batch sizes should follow your fluids engineer's procedure and the lot certificate.
When powder is the better choice
- Freight. You ship salt, not water.
- Flexibility. One product, many target densities.
- Storage. Dry powder keeps for long periods when sealed.
- Remote sites. Bags move where tankers cannot.
Frequently asked questions
Anhydrous or dihydrate: which should I order?
Use anhydrous when you want the highest CaBr₂ content per kilogram. Dihydrate is easier to handle in some climates but contains water of crystallisation, so more mass is needed. Tell us your mixing procedure and we will advise.
How should powder be stored?
In sealed original packaging, in a cool, dry, ventilated place, away from strong acids and oxidisers.
Is dissolving powder dangerous?
Dissolving releases heat and the dust irritates the eyes and airways. Add powder to water gradually, wear eye and respiratory protection, and follow the safety data sheet.
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