CAS No.: | 2809-21-4 |
---|---|
Formula: | C2h8o7p2 |
EINECS: | 220-552-8 |
Type: | Synthesis Material Intermediates |
Appearance: | Liquid |
Quality: | Refined |
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1-Hydroxyethylidene-1,1-diphosphonic acid HEDP CAS 629-82-3 Picture show:
Item
|
Index
|
||
Solid
|
60% Liquid
|
50% Liquid
|
|
|
HG/T 3537-2010
|
|
GB/T 26324-2010
|
Appearance
|
white crystal powder
|
clear or colorless to pale yellow aqueous solution
|
clear or colorless to pale yellow aqueous solution
|
Active content(HEDP)%
|
≥89
|
≥60
|
≥50
|
Phosphorous acid (as PO3³-)%
|
≤0.8
|
≤1
|
≤1
|
Phosphoric acid (as PO4³- )%
|
≤0.5
|
≤0.6
|
≤0.6
|
Chloride (as Cl-)%
|
≤0.01
|
≤0.01
|
≤0.01
|
pH (1% water solution)
|
1.5-2.0
|
1.5-2.0
|
1.5-2.0
|
Density (20ºC)g/cm3
|
--
|
≥1.40
|
≥1.36
|
Fe, mg/L
|
≤20.0
|
≤20.0
|
≤10.0
|
Active component (HEDP·H2O) /%
|
--
|
--
|
≥97.0
|
Ca sequestration (mg CaCO3/g)
|
--
|
≥500
|
≥450
|
This product is acidic, pay attention to labor protection during operation, should avoid contact with skin, eyes and so on, should immediately wash with plenty of water after contact.
|
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