Residue on Ignition

Sulfated ash tests found in BP and EP are considered equivalent to the USP residue on ignition test, except where noted (19). ... 

Tricholine Citrate Concentrate. This compound [546-63-4] is a clear, faindy yellow to light-green sympy aqueous Hquid containing 65.0 2.0% trich oline citrate. It is usually has a slight amine odor. It should have a pH of 9.0—10.0 and should contain not more than 0.2% trimethyl amine, 0.5% ethylene glycol, 10 ppm of formaldehyde, and 0.1% residue on ignition. Its limit for heavy metals is 20 ppm and it should contain mote than 0.2% chlorides or sulfates. 

Residue on ignition. When the test is carried out according to the general method <281 >, the residue of miconazole is not 0.2%. 

Residue on Ignition % Carbon on Resi- due % or Original Weight as Carbon % Hydrogen on Residue... 

Calculate the percent residue on ignition from the data in Example 3.2. Solution 3.3... 

Part C Residue on Ignition of Carboxymethyl Cellulose, Sodium Salt... 

Repeat steps 4 and 5 until you have successive weights that do not change by more than 2 mg. Calculate the percent residue on ignition. 

In fact, the limits of residue on ignition are basically applicable to the following two categories of pharmaceutical substances, namely ... 

Part—I has three chapters that exclusively deal with General Aspects of pharmaceutical analysis. Chapter 1 focuses on the pharmaceutical chemicals and their respective purity and management. Critical information with regard to description of the finished product, sampling procedures, bioavailability, identification tests, physical constants and miscellaneous characteristics, such as ash values, loss on drying, clarity and color of solution, specific tests, limit tests of metallic and non-metallic impurities, limits of moisture content, volatile and non-volatile matter and lastly residue on ignition have also been dealt with. Each section provides adequate procedural details supported by ample typical examples from the Official Compendia. Chapter 2 embraces the theory and technique of quantitative analysis with specific emphasis on volumetric analysis, volumetric apparatus, their specifications, standardization and utility. It also includes biomedical analytical chemistry, colorimetric assays, theory and assay of biochemicals, such as urea, bilirubin, cholesterol and enzymatic assays, such as alkaline phosphatase, lactate dehydrogenase, salient features of radioimmunoassay and automated methods of chemical analysis. Chapter 3 provides special emphasis on errors in pharmaceutical analysis and their statistical validation. The first aspect is related to errors in pharmaceutical analysis and embodies classification of errors, accuracy, precision and makes... 

Residue on ignition Following test method <281>, the weight of the residue can not exceed 0.1 %. 

Loss on drying Residue on ignition Organic volatile impurities... 

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