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Kryptofix 221

solution

For further processing only.

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Order information
Kryptofix 221 material number and pack size:
Material Number Pack Size
11183958103 custom fill
Will be supplied as "Kryptofix 221". Unit of measure is "kg active ingredient".
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Overview
Cryptant that binds cations in aqueous solutions
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Application
Use Kryptofix 221 in enzymatic tests for potassium to decrease the sodium concentration relative to potassium.
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Specification
Formula: C16H32N2O5
Molecular weight: 332.44 D
Appearance: Clear, yellow liquid
Solubility: Clear yellowish solution in water (c=4 mg/mL)
A340 (aqueous solution): ≤0.100
A405 (aqueous solution): ≤0.060
Identity (NIR): Corresponds to reference
13C-NMR spectrum: Corresponds to masterlot
Kryptofix 221 agent (HPLC; based on masterlot): ≥75%
Na (AES): ≤65 ppm
K (AES): ≤5 ppm
NH3 (evolution in buffer; after 10 days at +55°C): ≤50 μmol/L
Stability: At +2 to +8°C within specification range for 12 months. Keep under nitrogen. Protect from light.