Acidity and Formulation Adjustment
Glucono Delta-Lactone (GDL)
Glucono delta-lactone hydrolyzes gradually in water. Evaluate it in formulations that require progressive acidification.
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Acidity and Formulation Adjustment
Citric Acid (Anhydrous and Monohydrate)
Anhydrous citric acid and citric acid monohydrate supply different acid equivalents per unit mass because of the water of crystallization.
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Acidity and Formulation Adjustment
DL-Malic Acid
DL-malic acid is racemic. Distinguish it from L-malic acid and material of unspecified stereochemistry.
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Acidity and Formulation Adjustment
Fumaric acid
Fumaric acid dissolves differently from readily soluble acids. Particle grade affects dispersion in water.
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Acidity and Formulation Adjustment
Gluconic Acid
Gluconic acid is commonly purchased as a solution. Acid content and color affect metering and appearance.
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Acidity and Formulation Adjustment
Lactic acid
Lactic acid is available in different concentrations and optical compositions. Specify L-lactic acid or the other required form.
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Acidity and Formulation Adjustment
Malic Acid: Stereoisomer Selection
When malic acid stereochemistry has not yet been specified, establish whether the requirement is for the L or DL form.
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Acidity and Formulation Adjustment
Sodium Citrate
Sodium citrate is commonly used in aqueous buffers. Confirm the salt and hydration state.
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Acidity and Formulation Adjustment
L-malic acid
L-malic acid requires the L configuration. Specify it separately from DL-malic acid or material listed without stereochemistry.
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Acidity and Formulation Adjustment
Tripotassium Citrate
Tripotassium citrate adds potassium ions to a buffer system. Specify its hydration state.
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Acidity and Formulation Adjustment
Sodium lactate
Sodium lactate is commonly supplied in aqueous solution. Specify actual solids and optical form.
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Acidity and Formulation Adjustment
Tartaric Acid: Stereoisomer Selection
Tartaric acid has L, D, DL and meso forms. A generic product name does not identify the stereoisomer.
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Acidity and Formulation Adjustment
Monosodium Fumarate
Monosodium fumarate is an acid salt with different acid-base equivalents from fumaric acid and other sodium fumarates.
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Acidity and Formulation Adjustment
Potassium Malate
For potassium malate, specify potassium salt composition, hydration state and the corresponding malic acid stereochemistry.
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Acidity and Formulation Adjustment
Sodium Malate
Sodium malate is used for acidity and flavor control. Distinguish acid and neutral salts in the purchase specification.
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