CAS 7732-18-5
De-Ionised Water
CAS 7732-18-5H2O18.02 g/mol
De-Ionised Water is essential in the electronics and semiconductor industries, where its low conductivity ensures no ionic contaminants interfere with manufacturing processes. Known for its minimal ion content, this clear, colourless liquid is used extensively in laboratories, pharmaceuticals, and cleaning applications across Kenya and East Africa. Masteye Labs supplies this product to keen buyers seeking pure water solutions for their critical operations. From preventing scale in power generation systems to serving as a neutral base in cosmetics, De-Ionised Water is a versatile ingredient in various industries.
Main applicationLaboratory glassware cleaning — avoids ion residue
Also known as
- Deionized Water
- Demineralized Water
- DI Water

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Available in various bulk options tailored for industrial use.
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 7732-18-5
- Chemical formula
- H2O
- Molecular weight
- 18.02 g/mol
- Grade
- Technical grade
- Appearance
- Clear, colourless liquid
- Conductivity
- ≤ 5.0 µS/cm
- Residue after evaporation
- ≤ 25 ppm
De-Ionised Water, supplied by Masteye Labs, is characterized by its purity, with a conductivity of ≤ 5.0 µS/cm and a residue after evaporation of ≤ 25 ppm. These properties make it ideal for applications requiring minimal ionic interference. Buyers must consider these characteristics to ensure suitability for sensitive applications such as microchip manufacturing or pharmaceutical preparations. Deionised Water removes ions, which helps prevent corrosion and scale buildup in systems like turbines and cooling systems. When ordering, buyers should specify the required volume and any additional specifications related to conductivity and residue limits. This product is typically available in various bulk options, suited to industrial demands.
Delivery
De-Ionised Water is dispatched from our Nairobi warehouse across Kenya, and export delivery is arranged to the wider East African market. Lead time depends on quantity and grade and is confirmed with your quotation — see delivery and collection for the towns we reach and how dispatch works.
Applications & uses
- Laboratory glassware cleaning — avoids ion residue
- Electronics manufacturing — ionic contamination prevention
- Pharmaceutical formulation — ensures reagent purity
- Power systems — scale and corrosion prevention
- Automotive battery and engine cooling — free of ions
- Food & beverage rinsing — contamination prevention
- Spot-free car washing — prevents water spots
- Medical device cleaning — bacteria-free results
- Cosmetic production — as a pure base ingredient
Industries we supply this to
Why buy this from Sparks
- Low conductivity — prevents interference in electronic manufacturing
- Minimal residue — ensures high purity in pharmaceutical production
- Corrosion prevention — protects power systems from scale
- Versatile use — applicable across various industries
- Spot-free results — enhances visual quality in cleaning applications
- Safe for sensitive uses — suitable for medical and cosmetic sectors
Quality assurance
- Batches are checked against the specification values listed above before dispatch.
State what your process, auditor or customs clearance requires when you request a quotation, and it is confirmed with the quote.
Safety, handling & storage
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Frequently asked questions
What is the CAS number of De-Ionised Water?
The CAS registry number for De-Ionised Water is 7732-18-5. Its chemical formula is H2O, with a molecular weight of 18.02 g/mol. Quote this number when requesting a quotation or checking documentation, as it identifies the substance unambiguously regardless of the trade name used.
What are the other names for De-Ionised Water?
De-Ionised Water is also referred to as Deionized Water, Demineralized Water and DI Water. These names describe the same substance, so a specification or enquiry written against any of them can be matched to this product.
What grade of De-Ionised Water is supplied?
De-Ionised Water is supplied as Technical grade. State the grade your process requires when requesting a quotation — where an alternative grade can be sourced, it is confirmed at quotation stage rather than assumed.
What does De-Ionised Water look like?
De-Ionised Water is described as clear, colourless liquid. Appearance is a useful first check on receipt of goods, though it does not replace the certificate of analysis for confirming that the material meets specification.
What is De-Ionised Water used for?
Common applications include laboratory glassware cleaning — avoids ion residue, electronics manufacturing — ionic contamination prevention, pharmaceutical formulation — ensures reagent purity, power systems — scale and corrosion prevention, automotive battery and engine cooling — free of ions and food & beverage rinsing — contamination prevention. The suitability of the product for a particular process depends on the grade and specification required, which is worth confirming against your own process conditions.
Which industries use De-Ionised Water?
De-Ionised Water is supplied to the Water Treatment, Food Processing & Beverage, Agriculture & Agrochemicals, Mining & Minerals, Construction & Admixtures, Pharmaceuticals & Healthcare, Cosmetics & Personal Care, Cleaning & Detergents, Paints, Coatings & Inks, Textile & Leather Tanning, Oil, Gas & Energy and Laboratories & Research sectors. These are the industries this product is listed against in our catalogue; if your application falls outside them, we can advise on suitability before you order.
What packaging is De-Ionised Water available in?
Available in various bulk options tailored for industrial use. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
What is the HS code for De-Ionised Water?
De-Ionised Water is recorded against the HS customs code 3822.90.90. Quote this on customs and export paperwork; it is confirmed again on the commercial invoice for your specific consignment.
References
Technical information on this page was compiled from the following published sources. Safety and handling data always comes from the supplier’s own safety data sheet.
- 1.Product Specificationassets.thermofisher.com
- 2.Demineralized Water HSN Code used in United States - Volzavolza.com
- 3.Zolltarifnummer für Deionisiertes Wasser: 2853.90.10.00.0 - 2026zolltarifnummer.com
- 4.Industrial Uses of Deionised Water | We Packwe-pack.co.uk
- 5.DI Basics: Understanding Deionization – WC&P Onlinewcponline.com
- 6.Purified wateren.wikipedia.org
- 7.DEIONIZED WATER USES AND APPLICATIONSdrinknaturesbest.com
- 8.What is Deionized Water? DI Process, & Material Selectionhubbellheaters.com
- 9.ELI5, what is de-ionized water?reddit.com
- 10.What do you do with deionized water?reddit.com
- 11.what kind of water is this?reddit.com
- 12.Deionized & Treated Water Delivery Nairobi | Data Centers & Manufacturing | PowWater | PowWaterpowwater.com
- 13.Buy Deionized Water in Kenya & East Africa - System Star Industrial Productssystemstarindustrial.com
- 14.How Methods of Water Treatment Evolve in Industry?ke.ionexchangeglobal.com
- 15.Kenya Ultra Pure Water Market (2025-2031) | Trends, Outlook & Forecast6wresearch.com
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