Molekula
Water for LC-MS
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
Water for LC-MS is ultra-pure, high-purity water specifically prepared for liquid chromatography-mass spectrometry (LC-MS) applications, ensuring minimal interference in analytical results. It meets stringent purity requirements to avoid contamination in sensitive detection systems. This product has a CAS number of 7732-18-5, with the molecular formula H2O and a molecular weight of 18.02. It is stored at ambient conditions and carries a signal word of Warning, with hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation) and H335 (may cause respiratory irritation). Molekula supplies Water for LC-MS 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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1 L — £38.00 per pack ex VAT · £45.60 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 | Clear, colourless liquid |
| Acid | ≤0.0002% |
| Non-Volatile Matter | ≤1ppm |
| Conductivity | ≤1.0 μS/cm |
| APHA | ≤1 |
| Absorbance | @200nm ≤0.05au |
| TOC | ≤10 ppb |
| Total dissolved solids (as non-volatile residue) | ≤1ppm |
| Trace Impurities | ≤20 ppb |
| Alkali content | ≤0.00005% |
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 | 90034925 |
| 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 ultra-pure water for LC-MS used for?
Ultra-pure water for LC-MS is used as a mobile phase solvent in liquid chromatography-mass spectrometry to ensure minimal background noise and interference in analytical results.
What is the chemical formula and molecular weight of this water?
The chemical formula is **H₂O** with a molecular weight of **18.02 g/mol** (theoretical).
How should this water be stored?
Store in a clean, tightly sealed container at **ambient temperature** (15–25°C) to prevent contamination.
What purity grade is available for LC-MS applications?
Molekula supplies **LC-MS grade water** (typically ≥18.2 MΩ·cm resistivity, endotoxin-free, and low in organic/ionic contaminants).
Can Molekula supply this product in bulk?
Yes, we offer bulk quantities (e.g., 5L, 10L, or larger) for LC-MS applications, with packaging tailored to your needs.
What documentation comes with the order?
Each order includes a **Certificate of Analysis (CoA)**, **Safety Data Sheet (SDS)**, and **batch-specific purity testing** for LC-MS compatibility.
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.