Sodium tetraborate decahydrate: Borax

B. Standardisation against sodium tetraborate. The advantages of sodium tetraborate decahydrate (borax) are (i) it has a large relative molecular mass, 381.44 (that of anhydrous sodium carbonate is 106.00) (ii) it is easily and economically purified by recrystallisation (iii) heating to constant weight is not required (iv) it is practically non-hygroscopic and (v) a sharp end point can be obtained with methyl red at room temperatures, since this indicator is not affected by the very weak boric acid. 

C. Alexander-Weber, and F. G. K. Baucke. Limited Stability of the pH Reference Material Sodium Tetraborate Decahydrate ( Borax ), Fresenius J. Anal. Chem. 1994,350, 119. 

Sodium tetraborate (01m). Dissolve 38-1 g sodium tetraborate decahydrate (borax), Na2B407.10H2O, in water and dilute to 1 litre. 

Sodium tetraborate decahydrate (borax) (Na2B407 10 H20) is a stomach poison used against all common household ants and cockroaches. Its oral LD50 in rats is 2660-5190 mg/kg. 

Commercial available as boric acid, sodium tetraborate decahydrate (borax), sodium pentaborate, boron trioxide, and sodium biborate. 

The rapidity of the set of MAP cement can be ameliorated by the use of set retarders. Sodium tetraborate decahydrate (borax) can the used to decrease the rate of reaction between MgO and the acid phosphate salt. The normal set time for nonretarded cement is about 3 min, however, the addition of 20% borax can extend the set time to >20 min. It is thought that borax yields B402 ions, which then act as an Mg2+ cation acceptor. This complex precipitates on the surface of the MgO grains, forming a barrier that slows the release of further Mg2+ ions, retarding the set of the cement (Sugama and Kukacka, 1983a). 

Cobalt nitrate hexahydrate Nitric acid, cobalt (2+ salt), hexahydrate (9) (10026-22-9) Sodium tetraborate decahydrate Borax (8,9) (1303-96-4)... 

Write the formulas for the following compounds, and indicate the oxidation state of the group 4A element or of boron in each (a) boric acid, (b) sihcon tetrabromide, (c) lead(II) chloride, (d) sodium tetraborate decahydrate (borax), (e) boric oxide, (f) germanium dioxide. 

Seed crystals, however, do not necessarily have to consist of the material being crystallized in order to be effective isomorphous substances will frequently induce crystallization. For example, phosphates will often nucleate solutions of arsenates sodium tetraborate decahydrate (borax) can nucleate sodium sulphate decahydrate phenol can nucleate m-cresol and so on. The success of silver iodide, as an artificial rain-maker, is generally attributed to the striking similarity of the Agl and ice crystal lattices. However, there are many... 

Na2B407 IOH2O Sodium tetraborate decahydrate Borax Laundry... 

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