China (Mainland)
HEDP 90% 60% CAS: 2809-21-4 CAS NO.2809-21-4
- Min.Order: 1 Liter
- Payment Terms: L/C,T/T,MoneyGram
- Product Details
Keywords
- HEDP
- HEDP 60%
- 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid
Quick Details
- ProName: HEDP 90% 60% CAS: 2809-21-4
- CasNo: 2809-21-4
- Molecular Formula: C2H8O7P2
- Appearance: Clear, Colorless to pale yellow aqueou...
- Application: Water treatment products
- DeliveryTime: ASAP
- PackAge: 250kgs Plastic drum for 60% and 25kgs ...
- Port: Shanghai, Qindao or as client's requir...
- ProductionCapacity: 500 Metric Ton/Month
- Purity: 60%
- Storage: Cool, dry, shading, and sealed storage...
- Transportation: Sea, air or as client requirements
- LimitNum: 1 Liter
- Active content: 60%
Superiority
Elementary Chemical Co., Limited is specialized in China chemical raw material's sourcing, quality control and exporting service.
We keep track of market tendency and policy changes in relevant chemical industries,we aim to offer the most economic and reliable solution for global clients to seek the development together with our customers.
Elementary's main products is preservative biocides, water treatment chemicals,daily care chemicals, agrochemical raw materials etc.
Our endeavors and strives have won us more and more confidence and supports from both customers and suppliers.
Elementary, a partner you could rely on！
Details
General information:
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP)
CAS No:2809-21-4
Molecular Formula:C2H8O7P2
Molecular weight: 206.02
Properties:
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn etc. metal ions and form stable complex compound. It can dissolve the oxidized materials on these metals’ surfaces. Under 250℃ HEDP shows excellent scale and corrosion inhibition ability. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid of HEDP is high purity product, suitable for using in winter and freezing districts. it is quite suitable for using as cleaning agent in electronic fields and as additives in daily chemicals.
Specification:
| items | Specification(liquid) | Specification(power) |
| Appearance | Clear, Colorless to pale yellow aqueous solution | White crystal powder |
| Active content (HEDP)% | 58.0-62.0 | 90.0 min |
| Active content (HEDP·H2O)% | - | 98.0 min |
| Phosphorous acid (as PO33-)% | 1.0 max | 0.8 max |
| Phosphoric acid (asPO43- )% | 0.6 max | 0.5 max |
| Chloride (as Cl-) ppm | 100.0 max | 50.0max |
| pH (1% solution) | 2.0 max | 2.0 max |
| Density (20℃)g/cm3 | 1.43-1.47 | - |
| Fe, mg/L | 10.0 max | 5.0 max |
| Colour APHA (Hazen) | 30.0 max | - |
| Acetic acid % | 0.5 max | |
| Ca sequestration (mg CaCO3/g) | 500.0 min |
Application & Usage
HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.
In light&textile 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 & Storage:
ATMP liquid: Normally In 30kg or 250kg net Plastic Drum;ATMP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients request.Storage for ten months in room shady and dry place.
