Chelated trace elements
Iron DTPA
Iron DTPA uses a different ligand from EDTA and EDDHA iron sources. Specify the chelate required.
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ENVO CHEMICAL GROUP / PRODUCTS
Chemical raw materials catalogue
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323 items · Showing 181–200
Specialty Pharmaceutical Grades
Paracetamol DC90
DC90 denotes a direct-compression paracetamol grade. Confirm excipient composition and the active fraction for the specific product.
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Pharmaceutical Ingredients
Paracetamol
For paracetamol API, specify the pharmacopoeial edition, impurities and particle properties.
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Pharmaceutical Ingredients
Azithromycin
For azithromycin, specify hydration state, potency basis and impurity controls.
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Pharmaceutical Ingredients
Ibuprofen
Distinguish racemic ibuprofen from a specific enantiomer. Particle properties affect formulation development.
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Pharmaceutical Ingredients
Caffeine
For pharmaceutical caffeine, identify the anhydrous or hydrated form and the scope of registration documents.
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Pharmaceutical Ingredients
Aspirin
For aspirin API, assess hydrolysis-related impurities and moisture-resistant packaging.
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Pharmaceutical Excipients
Povidone, pharmaceutical grade
Povidone is a water-soluble pharmaceutical excipient graded by K value. Distinguish it from crosslinked crospovidone.
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Coagulation and flocculation
Ferric chloride
Evaluate ferric coagulants on the same raw water, comparing turbidity removal, settling and treated-water pH. Request separate quotations for solutions, anhydrous solids and hydrates.
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Coagulation and flocculation
Polyferric sulfate
Review iron content, basicity and physical form together. Color alone does not identify a suitable polyferric sulfate grade.
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pH, alkalinity and softening
Calcium hydroxide
Hydrated lime adjusts alkalinity and is used in softening. Active content affects consumption; coarse residue can affect slurry preparation.
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pH, alkalinity and softening
Hydrochloric acid
Specify industrial hydrochloric acid by its concentration in water. Check the chloride load, impurities and receiving equipment.
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pH, alkalinity and softening
Sulfuric acid
Quote sulfuric acid on a solution mass-fraction basis. For water treatment, account for sulfate addition and materials of construction.
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Cooling water and membrane systems
Sodium polyacrylate
Sodium polyacrylate grades differ in molecular weight and solids. Qualify a cooling-water dispersant separately from a superabsorbent resin.
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Cooling water and membrane systems
Benzotriazole
Evaluate benzotriazole for corrosion control of copper-containing materials. Distinguish free BTA from sodium salts and formulated liquids.
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Oxidation and microbial control
Hydrogen peroxide solution
Choose hydrogen peroxide by concentration and stabilization system. Match end use, material compatibility and transport packaging to that concentration.
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Dechlorination and adsorption
Sodium bisulfite
When using sodium bisulfite for dechlorination, determine active content from the actual solution composition, reporting basis and sampling time.
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Dechlorination and adsorption
Powdered activated carbon
For powdered activated carbon, identify the target contaminant, water quality and available contact time. Verify adsorption and downstream separation.
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Dechlorination and adsorption
Granular activated carbon
For granular activated carbon, evaluate the filter bed, flow and target contaminant together. Initial uptake and bed pressure drop affect different parts of the cost.
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Sludge conditioning and biological treatment
Sodium acetate
For sodium acetate as a denitrification carbon source, compare anhydrous salt, trihydrate and solutions on the same available carbon basis.
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