產品櫥窗
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EGTA
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產品型號：101-67-42-5 商品規格： |
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Chelating Agent. Synonym: Egtazic acid, Ethylene-bis(oxyethylenenitrilo)tetraacetic acid, Glycol ether diamine tetraacetic acid, Ethylene glycol-bis(2 -aminoethylether)-N,N,N',N'- tetraacetic acid
C14H24N2O10
Molecular Weight: 380.35
Appearance: White powder
Assay: ≥99%
A chelating agent useful for the determination of calcium in the presence of magnesium.
EGTA is a reagent that is used tochelate Ca2+ in the presence of Mg2+
EGTA chelates Ca2+ at a ratio of 1:1. The log (stability constants) for several cations are as follows:
Mg2+= 5.2
Ca2+= 11.0
Mn2+= 12.1
Fe2+= 11.8
Co2+= 12.3
Ni2+= 11.8
Cu2+= 17.7
Zn2+= 12.9
EGTA can be used as an anti-coagulant when dissolved at 1 g per 100 ml of blood. EDTA is more commonly used for the same purpose; either agent chelates the calcium ion from blood.
Solubility: This product is soluble in 1 M NaOH (110 mg/ml). A saturated solution at room temperature was found to be 2 mM in EGTA and had a pH of 2.72. This product has the following maximal solubilities in aqueous mediaat the respective pH values:
pH 8.4 > 0.52 M
pH 5.4 > 0.48 M
pH 4.5 = 0.45 M
pH 4.2 = 0.42 M
pH 4.0 = 0.31 M
Molecular Weight: 380.35
Appearance: White powder
Assay: ≥99%
A chelating agent useful for the determination of calcium in the presence of magnesium.
EGTA is a reagent that is used tochelate Ca2+ in the presence of Mg2+
EGTA chelates Ca2+ at a ratio of 1:1. The log (stability constants) for several cations are as follows:
Mg2+= 5.2
Ca2+= 11.0
Mn2+= 12.1
Fe2+= 11.8
Co2+= 12.3
Ni2+= 11.8
Cu2+= 17.7
Zn2+= 12.9
EGTA can be used as an anti-coagulant when dissolved at 1 g per 100 ml of blood. EDTA is more commonly used for the same purpose; either agent chelates the calcium ion from blood.
Solubility: This product is soluble in 1 M NaOH (110 mg/ml). A saturated solution at room temperature was found to be 2 mM in EGTA and had a pH of 2.72. This product has the following maximal solubilities in aqueous mediaat the respective pH values:
pH 8.4 > 0.52 M
pH 5.4 > 0.48 M
pH 4.5 = 0.45 M
pH 4.2 = 0.42 M
pH 4.0 = 0.31 M
Store at Room Temp.