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Kryptofix 221


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".
Cryptant that binds cations in aqueous solutions
Use Kryptofix 221 in enzymatic tests for potassium to decrease the sodium concentration relative to potassium.
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.