Kodia Company Limited
   
 
 
          Home                          About us                              Products                    Special Cyano Complex                   Q&C                     Contact us                  Order                         科迪亚实业中文版
Cyano complex chemicals
Potassium ferricyanide
Potassium ferrocyanide
Sodium ferrocyanide
 
Sulfite chemicals
Potassium Metabisulfite
Sodium metabisulfite
45%potassium sulfite
Potassium thiosulfate
50%Potassium thiosulfate
 
CHELATING AGENT
EDTA
EDTA-2Na
 
Pharmaceutical intermediates
Thiourea
Urea
Ammonium oxalate
Chromium(Ⅲ) oxide
 
 

    Products

 

Urea

CAS No.:57-13-6                                                                              EINECS.:200-315-5
MDL:-MFCD00008022                                                                    Beilstein:635724
Chemical Formula:H2NCONH2                                                    Molecular weight: 60.06
Synonyms: Carbamide;                                                                                                                                                                         Properties: Urea occurs  as a colorless to white,prismatic,crystalline powder or as small,white pellets.It is commonly produced from CO2 by ammonolysis of from cyanamide by hydrolysis,It is freely soluble in water and in boiling alcohol.but practically insoluble in chloroform and in ether.It melts at range of 132 to135°C
Main applications: medical applications , agricultural applications , business applications , laboratory applications , feed additives , cosmetics , industrial applications.
Quality standard

Item Analytical reagent FCC(5th)
 E927b
   Pharmacopoeia Grade
 (AR)     

  (Ph. Eur., BP, USP)

Assay(H2NCONH2),%                  ≥ 99.0 

  99.0-100.5

  99.0 (dried substance)

Clarty   complies

 

  complies

 Insoluble matter in water,%          ≤  0.005

 

 

 Ignition residue(SO4),%                ≤  0.01 

 0.1

  0.005

Chloride(Cl),%                                ≤ 0.0003  

 0.007

  0.001

Sulfate(SO4),%                              ≤ 0.001

 0.01

  0.01

Ammonia(NH3),%                           ≤ 0.005  

 

  0.05

Iron(Fe),%                                      ≤ 0.0002  

 

 

Heavy metals(as Pb),%                 ≤ 0.0002  

 

  0.001

Biuret(C2H5N3O2),%                     ≤ 0.2 

 

 0.1

Ammonium (NH4) %                       ≤  

 

  0.05

Alkali reaction material  

 

  complies

Residual solvents,  

 

  complies

Insoluble in ethanol  %                    ≤  

0.04

  0.04

loss on drying(105 °C, 1 h), %       ≤  

1.0

  1.0

Melting point  

 

  132-135 °C

Arsenic(As)  

3mg/kg

 
Lead(Pb),                                       ≤  

5mg/kg

 

ACS Grade                                     (ACS, ≥99.5% (T))

Items Standard Unit Method
Purity(GC)    ≥99.5(T)  %  
formaldehyde (HCHO)   ≤0.005 %  
biuret    ≤0.1 %  
Residue on ignition(as SO4)  ≤0.01 %  
Melting point  132-135 °C    
chloride (Cl-)  ≤5 ppm anion traces by ICP Atomic emission
sulfate (SO42-)  ≤10 ppm  
Calcium(Ca)  ≤10 ppm cation traces by ICP Atomic emission
Cadmium(Cd)  ≤5 ppm  
Cobalt(Co)  ≤5 ppm  
Chromium(Cr)  ≤5 ppm  
Copper(Cu)  ≤5 ppm  
Iron(Fe)  ≤5 ppm  
Potassium(K)  ≤50 ppm  
Magnesium(Mg)  ≤5 ppm  
Manganese(Mn)  ≤5 ppm  
Sodium(Na)  ≤50    
Nickel(Ni)  ≤5 ppm  
Lead(Pb)  ≤5 ppm  
Zinc(Zn)  ≤5 ppm  
Appearance      White Powder
Infrared spectrometry     Conforms to Structure

Grade                                                         (for molecular biology, ≥99.5%, powder)
appearance                                               white powder
solubility                                                    clear colorless solution at 1g plus 10ml of water
lead by ICP-atomic emission              ≤ 5 ppm 
iron by ICP-atomic emission               ≤ 1 ppm
copper by ICP-atomic emission         ≤ 1 ppm 
chloride content                                      ≤ 5 ppm
cyanate content                                       ≤ 10 ppm
DNA ses,                                                   none detected
RN ases,                                                   none detected 
proteases,                                                none detected
nickase,endonuclease detection        none detected
Purity                                                       ≥99.5% (T)
Packing:It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
Storage and Transport:It should be stored in a dry and ventilative warehouse; kept away form water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances.

 
  Copyright(C)2009,Kodia Company Limited All Rights Reserved.  
Supported by
 ChemNet ChinaChemNet Toocle Copyright Notice