Concentrated acids, incompatibilities with

Combustible when exposed to heat or flame can react with oxidizing materials. To fight fire, use water, CO2, dry chemical. Potentially explosive reaction with concentrated nitric acid. Incompatible with acetanilide, alkalies, ferric salts, spirit nitrous ether, urethan. When heated to decomposition it emits acrid smoke and irritating fumes. 

BIS (4-HYDROXYFENYL) PROPANE (80-05-7) C,sH,60j Combustible solid. Dust forms explosive mixture with air (flash point 207°F/97°C autoignition temp 510°F/266°C Fire Rating 1). Dust or powder forms explosive mixture with air. Violent reaction with strong oxidizers concentrated nitric acid. Incompatible with strong bases, amines, amides, and inorganic hydroxides acid chlorides and acid anhydrides. On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or COj extinguishers. 

The concentration of boric acid in the liquid detergent needed to obtain stabilization is typically around l-3%(w/w). Solubility limits prevents the use of concentrations of boric acid above a few per cent. The relatively high amount of used boric acid makes the detergent formulation more difficult to develop due to solubility problems and components being incompatible with high amounts of boric acid. 

A disadvantage of most organic modifiers is their incompatibility with the popular flame ionization detector (FID). We are presently investigating the modification of carbon dioxide with small amounts of highly oxidized, polar compounds that are invisible to the FID, such as formic acid. Our results with formic acid, at concentrations of about 0.3,0.5, and 0.7% (w/w) in CO2, may be summarized as follows (15), (Crow and Foley, manuscript in preparation) The addition of formic... 

The value of the first constant was determined as 1-1 x IQ-2 by measurements of the conductivity of the free acid.3 The second constant was determined as 1-95 x 10 7 by conductivity measurements in solutions of NaH2P04.3 This value was confirmed by calculations from the neutralisation curve as determined by means of the hydrogen electrode.4 The value of the third constant, viz. 3-6 x 10-la, was first determined by measurements of the conductivity of ammonium phosphates and also by the distribution of the ammonia between water and chloroform.3 It was shown that this result was incompatible with the observed values of hydrion concentration during the later stages of neutralisation by a strong alkali. A calculation based on these values gave 3 = 3-0 x 10-12 in decimolar solutions.4... 

Ca2 -chelators (B) prevent the enzymatic activity of Ca2+-dependent factors they contain COO groups that bind Ca2+ ions (C) citrate and EDTA (ethylenediaminetetraace-tic acid) form soluble complexes with Ca2+ oxalate precipitates Ca2+ as insoluble calcium oxalate. Chelation of Ca2+ cannot be used in vivo for therapeutic purposes because Ca2 concentrations would have to be lowered to a level incompatible with life (hypo-calcemic tetany). These compounds (sodium salts) are, therefore, used only for rendering blood incoagulable outside the body. This effect can be reversed at any time by addition of Ca2 ions. 

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