Molekula
trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid hydrate (CDTA)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid hydrate (CDTA) is a hexadentate chelating agent used primarily in analytical chemistry, metal ion analysis, and as a buffer in biochemical research. It effectively binds transition metals, making it useful for complexometric titrations and preventing metal-catalyzed degradation in solutions. CDTA has a CAS number of 13291-61-7, a molecular formula of C14H22N2O8 · H2O, and a molecular weight of 364.355. It is stored at ambient conditions with a signal word of Warning. Molekula supplies CDTA from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £51.40 per pack ex VAT · £61.68 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Melting Point | 205°C - 215°C |
| Heavy metals | ≤10ppm |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Assay | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 11274999 |
| CAS Number | 13291-61-7 |
| Molecular Formula | C14H22N2O8 · H2O |
| Molecular Weight | 364.355 |
| SMILES | C1CC[C@H]([C@@H](C1)N(CC(=O)O)CC(=O)O)N(CC(=O)O)CC(=O)O.O |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2922.49.4950 |
| Tariff Code | 2922498590 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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
No alternate names recorded for this product.
Frequently asked questions
What is trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid hydrate (CDTA) commonly used for?
CDTA is primarily used as a chelating agent in analytical chemistry, metal ion analysis, and as a component of total ionic strength adjustment buffer (TISAB) for fluoride ion-selective electrode measurements.
What is the molecular formula and molecular weight of CDTA?
The molecular formula is C₁₄H₂₂N₂O₈ · H₂O, and the molecular weight is 364.355 g/mol.
What is the recommended storage condition for CDTA?
Store CDTA at ambient temperature in a cool, dry place, away from direct sunlight and moisture.
What grades or purity levels of CDTA does Molekula supply?
Molekula supplies analytical grade and synthetic grade CDTA, with purity levels specified on the product documentation.
Can Molekula supply CDTA in bulk quantities?
Yes, Molekula can supply CDTA in bulk, with minimum order quantities and packaging options available upon request.
What documentation comes with an order of CDTA?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.