Diethyl ketomalonate 609-09-6

Appearance: white solid Protein purity:95%minSpecific activity:30.0U/mg P min
Rnase activity: none detected
Dnase activity: none detected

Appearance:Off-white to white crystallinePurity (HPLC):99%min
Melting point:213.0 ~ 216.0 oC (dec.)
Loss on drying:0.5%max

Appearance:White powderAssay(V2O5):65%min
K2O:33%min
Cr:0.05%max
Na:0.5%max
Fe:0.05%max
Cl:0.01%max
As:0.005%max

Appearance:Colorless or light yellow solidAssay:99%min

Appearance:Off-white solidAssay:95%min

Appearance: Off-white solidPurity: 99%min(GC)
Melting Point: 135 to 142degC
Water: 0.5%max
NMR: Conform

95%white crytal solid

Appearance:White powder or crystalline powderAssay:99%min
Water:0.5%max
Humidity(LOD):1.0%max
Solubility(0.5M in 1N NaOH):Colorless and clear
PH(1.0M aqueous):6.6-7.0
UVA/260nm:0.15 max
UVA/280nm:0.13 max

Appearance:White crystals or crystallized powderAssay:99.5%min.
Identification-infrared 
Spectrum:In accordance with spectrum of standard α-Arbutin
PH:5.0-7.0
Melting Point:202°C~210°C
Optical Rotation:+175°~+185°
Loss on Drying:0.5% max.
Residue on ignition:0.5%max.
Transmitta...

Appearance:White to light yellow powder or crystalline particlesAssay(by titration):98%min.
Dichloromethane solution:Slightly cloudy or clear solution

Appearance: Colorless transparent liquidAssay: 98.5%min
Refractive index: 1.550 to 1.560
BP: 144degC to 146degC
Density: 1.120 to 1.124g/ml

Appearance:White crystalline powderPurity(HPLC):99%min.
M.P:76 to 78°C