EDTA
Product Name: 2K(EDTA 2K)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
dipotassium salt, dihydrate
Product Code: K001-10 Unit: 50 g
Product Code: K001-12 Unit: 500 g
Description:
Appearance: white powder
Purity (as dihydrate): > 99.0 %(Tit.)
Sulfated ash : 42-45 %, Heavy metal (as Pb): <0.0005 %, Fe: <0.0005 %
Solubility: 100 g/100 ml water (22 ºC)/ pH : 4.2-4.8
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Product Name: 2NA(EDTA
2Na)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
disodium salt, dihydrate
Product Code: N001-10 Unit: 500 g
Description:
Appearance: white powder
Purity (as dihydrate): >99.5 %(Tit.)
Cl: <0.004 %, SO4: < 0.02 %, Cu: < 0.0005 %, Pb: < 0.0005 %, Fe:
< 0.0005 %
Solubility: 11.1 g/100 ml water (21 oC)/ pH (5 %):
4.2-4.8
Product Name: 2NH4(EDTA
2NH4)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
diammonium salt
Product Code: N008-10 Unit: 500 g
Description:
Appearance: white powder
Purity: >99.0 % (Tit.)
Sulfated
ash: <0.2 %, Heavy metal (as Pb): <0.0005 %, Fe: <0.0005 %
Solubility: 5 g/100 ml water/ pH: 4.2-4.8
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Product Name: 3K(EDTA 3K)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
tripotassium salt, dihydrate
Product Code: K002-10 Unit: 50 g
Product Code: K002-12 Unit: 500 g
Description:
Appearance: white powder
Purity (as dihydrate): >99.0 % (Tit.)
Sulfated ash: 58-60 %, Heavy metal (as Pb): <0.001 %, Fe : <0.001 %
Solubility: 100 g/100 ml water (22 ºC)/ pH (5 %): 7.5-9.1
Product Name: 3NA(EDTA
3Na)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
trisodium salt, trihydrate
Product Code: N002-10 Unit: 500 g
Description:
Appearance: white powder
Purity (as trihydrate): >98.0 %(Tit.)
Sulfated ash: 50-54%, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 46.5 g/100 ml water (22 ºC)/ pH (5 %): 6.5-8.6
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Product Name: 4H(EDTA free
acid)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic
acid
Product Code: H001-10 Unit: 500 g
Description:
Appearance: white powder
Purity: >99.0 %(Tit.)
Sulfated
ash: <0.2 %, Heavy metal (as Pb): <0.0005 %, Fe: <0.0005 %
Solubility: 34 mg/100 ml water, 25 ºC
Product Name: 4NA(EDTA
4Na)
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
tetrasodium salt, tetrahydrate
Product Code: N003-10 Unit: 500 g
Description:
Appearance: white crystalline powder
Purity (as tetrahydrate):
> 98.0 % (Tit.)
Sulfated ash: 60-64 %, Heavy metal (as Pb): <0.001 %,
Fe: <0.001 %
Solubility: 60 g/100 ml water ( 22 ºC)/ pH:
10-12
Product Name: Ca(II)-EDTA
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
calcium disodium salt, dihydrate
Product Code: E008-10 Unit: 50 g
Description:
Appearance: white powder
Purity: >99%
(Titration)
Product Name: Cu(II)-EDTA
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
copper disodium salt, tetrahydrate
Product Code: E010-10 Unit: 25 g
Description:
Appearance: blue powder
Purity: >99%
(Titration)
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Product Name: CyDTA
Chemical Name:
trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid, monohydrate
Product Code: C018-10 Unit: 25 g
Description:
Appearance: white powder
Purity (as monohydrate): >99.0 %
(Tit.)
Sulfated ash: <0.2 %, Heavy metal (as Pb): <0.001 %, Fe:
<0.001 %
Solubility: 4 g/25 ml 1M NaOHa100 ml water
CyDTA is utilized for masking various metal ions. The two amino groups
of CyDTA are in the trans formation, and its free acid is water-soluble.
CyDTA chelates at a slower rate than EDTA with metal ions, especially Al, C, Ni
and Zr. However, the stability constants of CyDTA-metal complexes are higher
than that of EDTA. Dojindo offers highly purified CyDTA for use as a masking
reagent on automatic amino acid analyzers. It does not interfere with the
ninhydrin reaction.
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Product Name: DTPA
Chemical Name: Diethylenetriamine-N,N,N',N,N-pentaacetic
acid
Product Code: D022-10 Unit: 5 g
Product Code: D022-12 Unit: 25 g
Description:
Appearance: white crystalline powder
Purity: >99.0 % (Tit.)
Sulfated ash: <0.2 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 1 g/10 ml 1M NaOHa50 ml water
The stability
constant of the DTPA-metal complex is the second highest, next only to the
CyDTA-metal complex. DTPA is a free acid that is hardly soluble in water. DTPA
is useful as a strong masking reagent. It is also used for the extraction of
metal ions such as Al, Fe, Ma, Zn, Cu, Cd and Ni, from soil at pH 5.3.
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Product Name: EDDP
Chemical Name: Ethylenediamine-N,N'-dipropionic acid,
dihydrochloride
Product Code: E004-10 Unit: 5 g
Description:
Appearance: white crystalline powder
Purity(as 2HCl): >98.0
%(Tit.)
Sulfated ash: <0.2 %, Heavy metal (as Pb): <0.001 %, Fe:
<0.001 %
Solubility: 1 g/100 ml water
Product Name: EDTA-OH
Chemical Name:
N-(2-Hydroxyethyl)ethylenediamine-N,N',N'-triacetic acid
Product Code: E005-10 Unit: 5 g
Product Code: E005-12 Unit: 25 g
Description:
Appearance: white crystalline powder
Purity: >99.0 %(Tit.)
Sulfated ash: <0.5 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 1 g/10 ml 1M NaOHà50 ml water
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Product Name: Fe(III)-EDTA
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
iron sodium salt, trihydrate
Product Code: E011-10 Unit: 50 g
Product Code: E011-12 Unit: 500 g
Description:
Appearance: yellowish-brown powder
Purity: >98%
(Titration)
Product Name: HIDA
Chemical Name: N-(2-Hydroxyethyl)iminodiacetic acid
Product Code: H006-10 Unit: 5 g
Description:
Appearance: white crystalline powder
Purity: >98.0 % (Tit.)
Sulfated ash: <0.1 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 1 g/100 ml water
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Product Name: IDA
Chemical Name: Iminodiacetic acid
Product Code: I001-12 Unit: 500 g
Product Code: I001-10 Unit: 25 g
Appearance: white crystalline powder
Purity: >99.0 % (Tit.)
Sulfated ash: <0.1 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 1 g/100 ml water
Product Name: Mg(II)-EDTA
Chemical Name: Ethylenediamine-N,N,N',N'-tetraacetic acid,
magnesium disodium salt, tetrahydrate
Product Code: E013-10 Unit: 25 g
Description:
Appearance: white powder
Purity: >99%
(Titration)
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Product Name: NTA
Chemical Name: Nitrilotriacetic acid
Product Code: N016-10 Unit: 500 g
Description:
Appearance: white crystalline powder
Purity: >99.0 % (Tit.)
Sulfated ash: <0.3 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 2 g/100 ml 1 M NaOH
Product Name: NTPO
Chemical Name: Nitrilotris(methylenephosphonic acid),
trisodium salt
Product Code: N030-08 Unit: 5 g
Description:
Appearance: white powder
Purity: >75.0 % (Tit.)
Water
content: 10-18 %/ Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 2 g/100 ml water
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Product Name: TTHA
Chemical Name:
Triethylenetetramine-N,N,N',N",N''',N'''-hexaacetic acid
Product Code: T031-10 Unit: 5 g
Description:
Appearance: white crystalline powder
Purity: >98.0 %(Tit.)
Sulfated ash: <0.2 %, Heavy metal (as Pb): <0.001 %, Fe: <0.001 %
Solubility: 1 g/10 ml 1 M NaOHà50 ml water
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Product Name: Zephiramine
Chemical Name: Benzyldimethyltetradecylammonium chloride,
dihydrate
Product Code: Z001-12 Unit: 25 g
Description:
Appearance: white crystalline powder
Purity (as dihydrate):
>98.0 % (Tit.)
Water content: 8-10 %
Sulfated ash: <0.2 %
Solubility: 1 g/100 ml water
Zephiramine is a cationic
surfactant used as a sensitizer in photometric determination of metal ions. This
reagent is easily soluble in water, acetone and alcohol, and slightly soluble in
benzene. The CMC value of Zephiramine is 0.37 mM. The distribution constant (Kd)
of organic solvent/water of Zephiramine are 0.09 (benzene, toluene), 2.4
(dichloroethane), 11 (chloroform), 0.1 (tetrachlorocarbon) and 0.53 (MIBK).
Zephiramine is also used for Kalibor titration, colloid titration and as a
surfactant for liquid scintillators.
