Molekula
De-Ionised Distilled Water
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
De-Ionised Distilled Water is high-purity water produced by distillation and de-ionisation, used in laboratories, pharmaceuticals, and industrial processes where impurities must be minimized. It has a CAS number of 7732-18-5, molecular formula H₂O, and a molecular weight of 18.02 g/mol. It is stored at ambient temperatures and carries the signal word Warning, with hazard statements H315, H319 and H335. Molekula supplies De-Ionised Distilled Water 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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5 L — £23.00 per pack ex VAT · £27.60 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 | Colourless Transparent Liquid |
| Chloride (Cl-) | ≤0.1 mg/l |
| Clarity | ≤1.0 FTU |
| Silica | ≤0.1 mg/l |
| Calcium (Ca) | ≤1.0 mg/l |
| Magnesium (Mg) | ≤0.05 mg/l |
| Sulfite | ≤0.1 mg/l |
| Sodium (Na) | ≤0.05 mg/l |
| Sulphates (SO4)(2-) | ≤0.1 mg/l |
| Fluoride (F-) | ≤0.1 mg/l |
| Calcium Carbonate (CaCO3) | ≤1.0 mg/l |
| TACC @ 37ºC | ≤1.0 cfu/ml |
| TACC @ 22ºC | ≤1.0 cfu/ml |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odour | Odorless |
| Melting Point | 0 °C |
| Boiling Point | 99.97 °C |
| Density | 0.9950 g/cm³ at 25 °C |
| Solubility (other solvents) | Very soluble in ethanol, methanol, acetone |
| Vapour Pressure | 23.75 mmHg |
| Refractive Index | 1.333 |
Source: PubChem CID 962 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 34750941 |
| CAS Number | 7732-18-5 |
| IUPAC Name | oxidane |
| EC Number | 231-791-2 |
| Molecular Formula | H2O |
| Molecular Weight | 18.02 |
| Exact Mass | 18.0106 |
| SMILES | O |
| InChIKey | XLYOFNOQVPJJNP-UHFFFAOYSA-N |
| InChI | InChI=1S/H2O/h1H2 |
| PubChem CID | 962 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2201.90.0000 |
| Tariff Code | 2853901000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P271 Use only outdoors or in a well-ventilated area
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+P352 IF ON SKIN: Wash with soap and water
- P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+P351+P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing
- P321 Specific treatment (see supplemental first aid instructions on this label)
- P403+P233 Store in a well-ventilated place. Keep container tightly closed
- P405 Store locked up
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
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
- aqua
- Dihydrogen oxide
- Distilled water
- oxidane
- Purified water
- Sterile water
- water
- Water vapor
- Water, deionized
- Water, mineral
Frequently asked questions
What is de-ionised distilled water used for?
It is commonly used in laboratory applications, pharmaceutical preparations, and industrial processes where high-purity water is required to avoid contamination.
What is the chemical formula and molecular weight of de-ionised distilled water?
The formula is H2O with a molecular weight of 18.02 g/mol.
How should de-ionised distilled water be stored?
It should be stored at ambient temperature, away from direct sunlight and contaminants.
What grade of de-ionised distilled water does Molekula supply?
Molekula supplies reagent-grade de-ionised distilled water suitable for laboratory and high-purity applications.
Can Molekula supply de-ionised distilled water in bulk?
Yes, Molekula can supply de-ionised distilled water in bulk quantities upon request.
What documentation comes with an order of de-ionised distilled water?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) upon request.
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.