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Boric Acid Powder-1Lb - Otto Frei
Otto Frei

Boric Acid Powder-1Lb

Part # 154.447 275 In Stock Weight <0.1 lb / <5 g
$7.45

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Description

Boric acid powder, technical grade, works as a casting flux and deoxidizing agent that keeps metal clean while you melt and pour at the bench. Use it as a general casting powder and flux or for crucible preparation and maintenance. Packaged as a powder in a one-pound (1 lb) box.

Features

  • Controls oxidation during melting and casting
  • Helps produce cleaner pours with fewer inclusions
  • Use alone or mix with borax for tailored flux behavior
  • Suitable for crucible prep and maintenance
  • Technical grade powder, sold in a 1 lb (0.45 kg) box

Notes

How to use:

  1. Sprinkle a small amount into the crucible or onto the melt to create a protective layer.
  2. For crucible conditioning, warm the crucible and rotate it to coat the interior surfaces.
  3. Blend with borax as needed to adjust flow, wetting, and oxidation control.

Borax vs. boric acid: Both are related boron compounds used in melting and crucible preparation. Borax is a naturally occurring mineral, and boric acid is a refined derivative. Each can be used alone as flux, or the two can be mixed together to combine benefits for melting and crucible prep.

Use appropriate PPE, including gloves and eye protection. Avoid inhaling dust and keep the container closed when not in use. Follow foundry and crucible manufacturer recommendations for safe handling.

Specifications

Brand
Otto Frei
Part #
154.447
Type
Fluxes
Dimensions
9.25 in x 5.5 in x 1.5 in
Function
Casting flux and deoxidizing agent
Form
Powder
Grade
Technical grade
Net Weight
1 lb (0.45 kg)
Application
General casting and crucible preparation
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

Reviews · 1

This product has 1 review.

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M
Mlou Brubaker
Good selection and service.

I get a lot of supplies from a huge company in Albuquerque 😉but they don’t carry all the traditional things, like powdered boric acid. My shipment came very quickly to MInnesota, and I think I will be checking here for necessary supplies and tools more often, especially since the huge company has apparently stopped printing that handy real-life catalog.
I liked the historical information recently posted, too. Thanks for dealing the good stuff!