SODIUM BROMIDE Chemical Compatibility

Sodium Bromide (NaBr, CAS 7647-15-6) is a white, highly soluble salt usually stored as a 40% to 46% clear solution with a specific gravity of about 1.4 to 1.5. Combined with chlorine or bleach, it forms hypobromous acid, a biocide for cooling towers, pools and spas. It is also used in clear brine oilfield completion fluids, pharmaceuticals and photography. Sodium bromide solutions are near neutral but corrode steel once wet. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.

At a glance

HDPE is the most economical tank material for Sodium Bromide, rated Excellent. PVDF (Kynar®) and nylon are also rated Good or better. Avoid aluminum hardware. Rated Fair (contact us before use): 316 stainless steel hardware.

  • Excellent No or minor effect. Recommended.
  • Good Slight effect. Generally suitable.
  • Fair Moderate effect. Limited or conditional use — contact us.
  • Not Recommended Severe effect. Do not use.
  • No Data Not tested. Contact us before use.

Tank Resins

How Sodium Bromide works with the plastics used to make our storage tanks.

Material Rating
HDPE Excellent
Polypropylene No Data
Nylon Good
PVDF (Kynar®) Excellent

Fittings

How Sodium Bromide works with the plastics used for tank fittings.

Material Rating
HDPE Excellent
PVC Good
CPVC Excellent
Polypropylene No Data
PVDF Excellent

Gaskets & O-Rings

How Sodium Bromide works with gasket and O-ring materials.

Material Rating
Buna-N No Data
EPDM Excellent
Viton® Excellent

Metals

How Sodium Bromide works with the metals used for fittings and bolts.

Material Rating
316 Stainless Steel Fair
Hastelloy No Data
Titanium No Data
Aluminum Not Recommended

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