KARPSCHEM
Analytical & Quality Control Laboratory
ISO/IEC 17025:2017 CERTIFIED
COA No: KC-COA-2026-088

Certificate of Analysis

Product NameN-Nitrosodiethylamine (NDEA)
Chemical NameN-Ethyl-N-nitrosoethanamine
Catalog No.KC-NIT-001
Batch / Lot No.KC-2026-NDEA-04
CAS Number55-18-5
Molecular FormulaC₄H₁₀N₂O
Molecular Weight102.14 g/mol
AppearanceYellow to light amber transparent liquid
HPLC Purity (230 nm)99.42% (Area %)
1H NMR IdentificationConforms to expected structure (CDCl3, 400 MHz)
Mass Spectrometry (ESI+)m/z 103.1 [M+H]+ matches theoretical mass
Quantitative GC-MS / LC-MSConforms to ICH M7 trace impurity criteria
Storage ConditionsStore at 2°C – 8°C. Protect from direct light.
Retest DateOctober 2028
Analyzed By: QC Analytical Chemist
Method: Reversed-Phase HPLC-DAD
Approved By: Head of Quality Assurance
Date of Issue: October 2026