Borax formula

Tetraalkyl titanates react with organic borates, B(OR )2, to give complexes of the general formula Ti(OR)4 B(OR )2, which are useful as catalysts and cross-linking agents (562). Mixtures of chelated organic titanates such as TYZOR TE and TYZOR LA with alkaU metal borates, such as borax, or boric acid can be used to produce shear-stable fracturing fluids (563). 

Sodium Metaborate Tetrahydrate. Sodium metaborate tetrahydrate, NaB02 4H2O or Na20 B2O3 -8H20 formula wt, 137.86 triclinic sp gr, 1.743 is easily formed by cooling a solution containing borax and an amount of sodium hydroxide just in excess of the theoretical value. It is the stable... 

Siagle-crystal x-ray studies have shown that the borate ion ia the potassium compound is identical to that found ia borax (4) and has the stmctural formula K2[B405(0H)J -2H20 (122). 

Chemical Designations - Synonyms Borax, anhydrous Sodium biborate Sodium pyroborate Sodium tetraborate,anhydrous Chemical Formula Na2B407. 

Disodium Tetraborate Decahydrate (Borax Decahydrate). Disodium tetraborate decahydrate, Na2B40 101I, 0 or Na20 2B203 1 HI I (). formula wt, 381.36 monoclinic sp gr, 1.71 specific heat 1.611 kj/ (kg-K) [0.385 kcal/(g°C] at 25—50°C (68) heat of formation, —6.2643 MJ/mol (—1497.2 kcal/mol) (69) exists in nature as the mineral borax. Its crystal habit, nucleation, and growth rate are sensitive to inorganic and surface active otganic modifiers (70). 

Dipotassium Tetraborate Tetrahydrate. Dipotassium tetraborate tetrahydrate, IC,B4Oy 4H20 or K O 2B2C>3 4H20, formula wt, 305.49 orthorhombic sp gr, 1.919 is much more soluble than borax in water. Solubility data are given in Table 9 pH with concentration is given in Table 10. 

The thermal dehydration of the 1 1 3 (52) and, in particular, the hexaborates of general formula 1 3 x (396) have been studied intensely. Structurally, the 1 2 9 compound resembles borax and has... 

Notes Borax is available as borax, pentahydrate, but most commonly as borax, decahydrate, the form used in photographic formulas. The old term for decahydrate is crystalline. Borax, decahydrate, and 20 Mule Team Borax are one and the same. 

Another substitution for sodium metaborate, octahydrate is to use 9 5 grams of sodium hydroxide and 45.4 grams of borax, decahydrate in water to make 1.0 liter. This is equivalent to a 10% solution of sodium metaborate, octahydrate. This can be made from Red Devil Lye and 20 Mule Team Borax and safely used in formulas as a substitute (20.0ml of a 10% solution = 2.0 grams 25.0ml = 2.5 grams etc.). 

This formula can also be used as a divided developer. To use as a two-solution developer try 4 minutes at 68F/20C followed by 3 minutes in a 2% borax solution. Use intermittent agitation in the first solution and gentle but continuous agitation in the second solution. This will prevent uneven development, especially with 120 roll film. For higher contrast lighting, increase exposure and shorten the time in the first solution. 

The mineral rasorite (kernite), tetrahydrate of sodium tetraborate is a very suitable material for the production of borax. Its formula is Na3B407. ... 

By fusing borax with boron trioxide, two definite acid borates are produced. One of them has the formula Na20,3B203, and melts at 694° C. the other melts at 783° C., and has the formula Na20,4B203.2 The crystallization of solutions with the composition ratio... 

Sodium perborate, NaB03,4H20.—A perborate of the formula indicated is formed by the action of excess of hydrogen peroxide on a solution of borax and sodium hydroxide,4 and the action of a mineral acid or hydrogen peroxide on a mixture of sodium peroxide and boric acid 5... 

---