Borax Pentahydrate

Alternate Names: Borax 5 Mol, Sodium Tetraborate, Borax 5-hydrate

Description: Etibor-48

Oxide	Analysis	Formula
Na2O	21.29%	1.00
B2O3	47.80%	2.00
H2O	30.90%	n/a
Oxide Weight		201.20
Formula Weight		291.17

Notes

Consists of white crystalline granules or powder. It is mildly alkaline in solution. The advantages of this material vs. the decahydrate form lie in the lower transportation, handling and storage costs of a more concentrated product. 74.6 lb. of this material are equivalent to 100 lb. of decahydrate.

It is stable under ordinary conditions, free-flowing, and easily handled by air or mechanical conveying.

Borax pentahydrate is currently produced at Bandirma Borax Plant in Turkey and at Rio Tinto in California.

Related Information

The amazing fluxing power of boron (in borax)

The two top clay bars contain 15% hydrous borax. At cone 06, a very low temperature, it has already melted and drained out of the bars, running down over the others as a glass.

Links

URLs	http://www.etimineusa.com/wp-content/uploads/2018/01/6-2017-Etibor_48.pdf Borax Pentahydrate Eitbor-48 Data Sheet Borax Pentahydrate TECHNICAL GRADE, GRANULAR - Na2B4O7 . 5H2O Disodium Tetraborate Pentahydrate - CAS #: 12179-04-3 / EC #: 215-540-4
URLs	http://www.borax.com/pdfs/dist/Profile_Neobor_Borax_5_Mol.pdf Neobor Data Sheet
Materials	Anhydrous Borax A white, odorless product crystalline granular by dehydrating Borax to remove the crystal bound water.
Materials	Boric Acid
Materials	Borax Decahydrate
Materials	Boric Oxide
Hazards	Boron Compounds and Their Toxicity
Typecodes	Generic Material Generic materials are those with no brand name. Normally they are theoretical, the chemistry portrays what a specimen would be if it had no contamination. Generic materials are helpful in educational situations where students need to study material theory (later they graduate to dealing with real world materials). They are also helpful where the chemistry of an actual material is not known. Often the accuracy of calculations is sufficient using generic materials.
Typecodes	Flux Source Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Glossary	Borate Borate glazes, those fluxed with the oxide B2O3, are the most common type used in ceramic industry and hobby for low and medium temperatures.
Oxides	B2O3 - Boric Oxide
Minerals	Borate Minerals The major borate minerals are Colemanite and Ulexite. The geology required for borates is found in v

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