Molekula
Diethylenetriaminepentamethylenephosphonic acid heptasodium salt 40% solution
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Diethylenetriaminepentamethylenephosphonic acid heptasodium salt (DTPMP·Na₇) is a high-performance chelating agent and scale inhibitor widely used in water treatment, detergents, and industrial cleaning formulations to prevent mineral deposits and improve efficiency. This 40% aqueous solution has a CAS number of 68155-78-2, molecular formula C9H21N3O15P5Na7, and a molecular weight of 727.07. It is stable at ambient storage conditions but requires careful handling (Signal Word: Warning). Molekula supplies Diethylenetriaminepentamethylenephosphonic acid heptasodium salt from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | Red/ Brown liquid |
| Density | ≥ 1.25g/ml |
| pH | 7.0 - 9.0 (1% aq.) |
| Chloride (Cl-) | ≤ 5.0% |
| Assay | 40.0 - 42.5% |
| Iron (Fe) | ≤ 20mg/l |
| Reactivity | 31.5 - 33.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90031878 |
| CAS Number | 68155-78-2 |
| IUPAC Name | heptasodium;[bis[2-[[hydroxy(oxido)phosphoryl]methyl-(phosphonatomethyl)amino]ethyl]amino]methyl-hydroxyphosphinate |
| EC Number | 268-990-9 |
| Molecular Formula | C9H21N3O15P5Na7 |
| Molecular Weight | 727.07 |
| Exact Mass | 726.8945 |
| SMILES | C(CN(CP(=O)(O)[O-])CP(=O)([O-])[O-])N(CCN(CP(=O)(O)[O-])CP(=O)([O-])[O-])CP(=O)(O)[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+] |
| InChIKey | OIPXXWBYRWQVLJ-UHFFFAOYSA-G |
| InChI | InChI=1S/C9H28N3O15P5.7Na/c13-28(14,15)5-10(1-3-11(6-29(16,17)18)7-30(19,20)21)2-4-12(8-31(22,23)24)9-32(25,26)27;;;;;;;/h1-9H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24)(H2,25,26,27);;;;;;;/q;7*+1/p-7 |
| PubChem CID | 15361742 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29314900 |
| Tariff Code | 2931498090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H319 Causes serious eye irritation
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- heptasodium diethylenetriaminepentamethylenephosphonate
Frequently asked questions
What is Diethylenetriaminepentamethylenephosphonic acid heptasodium salt (DTPMP) used for?
This product is primarily used as a high-performance chelating agent in water treatment to inhibit scale formation, sequester metal ions, and improve the efficiency of detergents and cleaning formulations.
What is the chemical formula and molecular weight of this product?
The formula is **C₉H₂₁N₃O₁₅P₅Na₇** with a molecular weight of **727.07 g/mol** (for the anhydrous form). The solution is supplied at **40% concentration**.
What safety classification does this product have, and how should it be handled?
The product has a Signal Word: Warning under GHS, with hazard statement H319 (causes serious eye irritation). Use appropriate PPE (gloves, goggles) and avoid inhalation or ingestion.
What grades or purities of this product does Molekula supply?
Molekula supplies this product as a **technical-grade 40% aqueous solution**, suitable for industrial water treatment and detergent applications.
Can Molekula supply this product in bulk quantities?
Yes, Molekula offers this product in **bulk packaging (IBCs, drums, or custom solutions)** for large-scale industrial applications. Minimum order quantities may apply.
What documentation is provided with an order of this product?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a technical datasheet detailing specifications, usage guidelines, and handling instructions.
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