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60% 90% HEDP 1-Hydroxyethylidene-1, 1-Diphosphonic Acid CAS 2809-21-4 - HEDP and 1-Hydroxyethylidene-1 1-Diphosphonic Acid
Descripción del Producto
1-Hydroxyethylidene-1,1-diphosphonic acid [2809-21-4]
| Identificación | ||
| Nombre | 1-Hydroxyethylidene-1,1-diphosphonic acid | |
| Sinónimos | 1-Hydroxyethane-1,1-diphosphonic acid; 1-Hydroxyethylidenedi(phosphonic acid); Dequest 2010; Etidronic acid; HEDP | |
| Estructura molecular | ||
| Fórmula molecular | C 2 H 8 O 7 P 2 | |
| Peso molecular | 206.03 | |
| Número de registro CAS | 2809-21-4 | |
| EINECS | 220-552-8 | |
| Propiedades | ||
| Densidad | 1.45 (60% aq.) | |
Especificación:
| Elementos | Índice | |
| Apariencia | Clear, Colorless to pale yellow aqueous solution | Polvo de cristal blanco |
| Active content (HEDP)% | 60.0 mín. | 90.0 mín. |
| Active content (HEDP·H 2 O)% | - | 98.0 mín. |
| Phosphorous acid (as PO 3 3- ) % | 2.0 máximo | 0.8 máximo |
| Phosphoric acid (as PO 4 3- )% | 0.8 máximo | 0.5 máximo |
| Chloride (as Cl - )% | 0.02 máximo | 0.01 máximo |
| pH (1% water solution) | 2.0 máximo | 2.0 máximo |
| Density (20ºC)g/cm 3 | 1.40 mín. | - |
| Fe, mg/L | 20.0 máximo | 10.0 máximo |
| Ca sequestration (mg CaCO 3 /gramo) |
500.0 mín.
| |
Uso:
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Package and Storage:
HEDP liquid: 200L plastic drum,IBC(1000L),customers' requirement.
HEDP solid: 25kg/bag,customers' requirement.
Storage for twelve months in room shady and dry place.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
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