N-甲基甲酰胺 
  
                                        
                                         
					Reference Material
					
						This certificate is designed in accordance with ISO 17034 and ISO Guide 31.
						This reference material
						(RM) was designed,produced and verified in accordance with ISO/IEC 17025, ISO
								17034 and a registered
						quality management system ISO 9001.
					
				 
				
				
						
							Product Name(产品名称)
						
						
							
						
							N-Methylformamide
					
				 
				
					
						
							Product Code(产品编号)
								77719-100mg
						
	
						
							Lot Number(产品批号)
							22080102
						
							
								CAS No.
									123-39-7
							
							
								Mol. Weight(分子量)
								59.07
							
							
								Mol. Formula(分子式)
									
										C2H5NO
									
							
							
								Melting Point(熔点)
								N/A
							
						
							Expiry Date(失效日期)
							2024-Aug-07
						
							
								Boiling point(沸点)
									N/A
							
							
								Appearance(外观)
								
									
									
									
										
										Colorless Clear Liquid__
									
								
							
							
								Storage Temp(存储条件)
								
									
									
									
										(20±5)℃,Keep in the shade	
									
								
							
					 
						
						
				 
				
					
						
						
							C E R T I F I E D
							
							
									Purity
									
										99.9%
							
						 
					 
					
						
						
							C E R T I F I E D
							Expanded Uncertainty (U)
								0.5%
							
						 
					 
				 
				
					Uncertainty
					
						The certified value(s) and uncertainty(ies) are determined in accordance with ISO 17034
						with an 95% confidence
						level(k=2). Uncertainty is based on the Total Combined Uncertainty, including uncertainties of characterisation,
						homogeneity and stability testing. Stability values are based on real evidence opposed to simulation.
					
				 
				
					Traceability
					
						The balances used for gravimetric measurements are calibrated with weights traceable to the national standards.
						The calibration of the balances is verified annually by an external accredited calibration service. This analysis
						method has been verified using an approach consistent with ISO 17034:2016 & ISO
								17025:2017.
					
				 
				
				
					
						
							| CERTIFICATE    ON | QC    SIGNATURE |  | 
						
							| 2022-Aug-08 |   | RM Release | 
					
				 
				
			
					
						Method of Identification
						GC
					 
				
			
			 
				
						Method of Identification
						GC
					 
				
			
				Intended Use
				
					This RM is intended for use in a laboratory as a calibration and quality control standard or in method development
					for analytical techniques.
				
			 
			
				Storage
				
					This reference material meets the specification stated in this certificate until the expiry date, provided it is
					stored unopened at the recommended temperature here in. If storage after opening is necessary, the RM should be
					tightly closed and kept from light and moisture.
				
			 
			
				Hazards
				
					Read Material Safety Data Sheet (MSDS) and understand any potential hazard(s) prior to the use of this product.
					All chemicals should be considered potentially hazardous in nature and should only be handled by qualified
					personnel using established good laboratory practices.
				
			 
			
				Homogeneity
				
					Random replicate samples of the final packaged RM have been analysed to prove homogeneity compliant with ISO
							17034.
				
			 
			
				Instructions for use
				
					It is recommended to use 1 mg as the minimum sample size and if less material is used, to increase the certified
					uncertainty by a factor of two for half sample and four for a quarter of sample.Visit the support section of our
					website technology videos and frequently asked questions.