Aluminum oxalate

By reacting aluminum hydroxide with oxalic acid, basic aluminum oxalate can be produced, which is thermally stable to 330°C, losing 51% of its mass on decomposition at temperatures above 450°C. It is reported to have a flame-retarding and smoke-suppressing action similar to ATH, but because of its increased thermal stability, it can be used in polyamides and thermoplastic polyesters. However, unlike magnesium hydroxide, in these polymers it does not cause hydrolytic degradation.2... 

Cavosurface cleansing by treatment with an aqueous solution of aluminum oxalate (ca. 5%) and glycine (2.5%) adjusted to pH 1.5. This results in both enamel and dentin etching and in amino acid infiltration into the etched dentin. 

Alkyl acetone Alkyl alcohol Alkyl benzene Alkyl chloride Alkyl sulfide Aluminum acetate Aluminum bromide Aluminum chlorate Aluminum chloride Aluminum ethylate Aluminum fluoride Aluminum fluorosilicate Aluminum formate Aluminum hydroxide Aluminum nitrate Aluminum oxalate Aluminum phosphate Aluminum sulfate Alum... 

Modifying the functional cover of the y-AbOs surface using aluminum oxalate... 

Chang et al. [20] used a nanosized hydroxyl aluminum oxalate (nano-HAO) with a dioctahedral 1 1 layered clay mineral (nanokaolin) to investigate their fire retardancy effects on a LDPE/ EPDM blend. In Table 8.5, the TTls and HRRs of the composites containing 48 wt% nano-HAO and 12 wt% nanokaolin are compared with that of the composites containing 60 wt% nano-HAO alone. Whereas nano-HAO or nanokaolin has essentially no effect on the TTI, the peak and average HRRs are dramatically reduced with the addition... 

Table 8.5 Effect of nanoclay (nanokaolin) and nanosized hydroxyl aluminum oxalate (nano-HAO) on the ignition and burning behavior of a LDPE/EPDM blend...

The hydrolysis of the aluminum salt may be masked by the addition of neutral substances which form complexes. For example, the aluminum ion can be replaced by alkali ions and it can then take a place in compounds whose reaction is neutral. The acid or alkaline reaction of the masked solution will then reveal the presence of free acids or basic aluminum salts, since the exchange involves the disappearance of only the aluminum ion and not the hydrogen or hydroxyl ions. Alkali oxalates are excellent complex formers with aluminum salts. If sodium oxalate is added to solutions of aluminum salts there is an immediate formation of the sodium salt of aluminum oxalic acid, in which the aluminum is a constituent of a stable complex anion ... 

Aluminum nitrate solutions - 465, 764 Aluminum oxalate - 611,777, 857 Aluminum oxide - 182,839, 857 Aluminum oxychloride - 27, 54, 154, 252, 263 Aluminum phosphate - 355 Aluminum plating solution -182 Aluminum potassium sulfate (Alum) -12, 19,... 

Aluminum chloride, saturated aqueous solution Aluminum oxalate... 

Kerosene Kerosine Sesame Oil Petrolatum Nujol Cherry Juice Ethereal Oils Cherry Syrup Bitter Almond Oil Fuming Suifuric Acid Oleum Violet Oil Walnut Oil Verbena Oil Green Soap Beer Butter Corn Syrup Naphtha Soy Sauce Li groin Cetavlon Quinine Sulfate Rosin Bitumen 2-Bromobutyric Acid Sodium Lignosulfonate Methyl Methacrylate Clophen A50 Aluminum Oxalate Calcium Salicylate o-Cresotinic Acid WD 40... 

Aluminum Oxalate 814-87-9 Ammonium Sulfate 7783-20-2 Barium Oxide 1304-28-5... 

Fig. 7. Ball and stick model of a bidentate aluminum-oxalate 1 1 complex with coordinating water in an octahedral geometry...

Stoessell and Pittman (1990) concluded that, under reservoir conditions, aluminum-acetate complexes would be insignificant but that aluminum-oxalate and aluminum-malonate complexes may be significant. They also suggested that high aluminum concentrations measured in oxalic acid may be due to enhanced dissolution kinetics at low pH, not the presence of organic anions. ... 

---