Product Overview
Battery Water is deionized, purified water produced specifically for applications where dissolved minerals and ionic contaminants cause problems — most commonly lead-acid battery electrolyte maintenance. Ordinary tap water introduces calcium, magnesium, and chloride ions that plate onto battery electrodes and accelerate sulfation. Battery Water removes that variable.
This product is available to order in sizes from 1-quart bottles through 330-gallon totes, serving everyone from a fleet mechanic topping off a single forklift battery to a warehouse operation maintaining hundreds of deep-cycle cells. CAS number 7732-18-5.
Why This Concentration
Battery Water is not diluted or blended — it is water with minerals and dissolved solids stripped out through deionization. That distinction matters because the purity of the water you add to a flooded lead-acid cell directly affects the electrolyte's conductivity and the battery's service life. Tap water or even filtered drinking water carries enough dissolved solids to coat plates, raise internal resistance, and shorten cycle counts. Deionized water keeps the sulfuric acid electrolyte clean so the cell chemistry works as designed.
Beyond batteries, the same mineral-free character makes this water useful anywhere mineral fouling is a concern: topping off closed-loop cooling systems, preparing laboratory rinse solutions, or mixing nutrient feeds in hydroponic operations. If your process specification calls for water free of ionic contamination, Battery Water is the correct starting point.
Chemical Profile
Battery Water is a clear, odorless liquid in its standard form. Its chemical formula is H₂O with a molecular weight of 18.015 g/mol and a CAS number of 7732-18-5. Density is 1 g/mL at standard conditions. It is completely miscible — it dissolves in and blends with virtually every aqueous system. Vapor pressure is 23.75 mmHg, consistent with pure water near room temperature. The product carries no detectable odor or color, which is itself a practical indicator that dissolved mineral content has been reduced.
Industrial Applications
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Lead-acid battery maintenance. The primary use. Flooded lead-acid batteries in forklifts, golf carts, backup power banks, and automotive starting batteries lose water through electrolysis during charging. Refilling with deionized Battery Water maintains the correct electrolyte balance without introducing mineral scale that accelerates plate degradation.
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Electrolyte solution preparation. Facilities that mix their own electrolyte solutions — whether sulfuric acid for batteries or other ionic formulations — start with deionized water to control the final composition. Dissolved solids in the make-up water would change the target concentration and introduce unwanted side reactions.
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Cooling systems. Closed-loop cooling circuits, radiator top-offs, and chiller loops benefit from mineral-free water because calcium and magnesium deposits reduce heat-transfer efficiency and clog narrow passages over time.
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Laboratory reagent preparation. When an analytical or bench procedure calls for purified water as a solvent or diluent, Battery Water serves as a readily available deionized source for general-purpose lab work.
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Hydroponics. Growers use deionized water as the base for nutrient solutions so they control every ion the plant receives, rather than guessing what the municipal supply contributes.
Handling & Storage
Battery Water is not classified as hazardous under GHS based on available data (per the product's GHS classification). No signal word, pictograms, or hazard statements apply. That said, standard industrial hygiene practices still apply when handling any bulk liquid:
- Store in tightly sealed HDPE or other inert containers in a cool, dry area away from direct sunlight. Exposure to open air or contaminated containers defeats the purpose of deionized water by allowing dissolved gases and airborne particulates back in.
- Avoid storing near strong acids, strong bases, or oxidizers — not because the water itself is reactive, but because cross-contamination from splashes or shared equipment would compromise purity.
- Wear standard PPE (safety glasses, gloves) when transferring large volumes. A 55-gallon drum of water weighs over 450 pounds; use appropriate mechanical handling and spill containment.
- Keep containers sealed between uses. Even brief exposure to laboratory or warehouse air introduces CO₂ (lowering pH) and dust.
Hazmat & Shipping
Battery Water is not assigned a UN number, hazard class, packing group, or regulated proper shipping name. It is not classified as a hazardous material for transport purposes (per 49 CFR 172.101). This means it does not require hazmat placarding, shipping papers with a DOT hazard classification, or special carrier endorsements under federal transport regulation.
Documentation
A Safety Data Sheet (SDS) ships with every order, available in English, Spanish, French, and Japanese. A Technical Data Sheet (TDS) is also available for buyers who need published product specifications for their records or incoming-QC procedures. Lot-specific Certificates of Analysis (COA) can be provided to document the quality of each production batch.
Why Buy from Alliance Chemical
Battery Water is available to order in pack sizes from single quarts up to 330-gallon totes — the same product whether you need one jug for a maintenance cart or a full pallet for a forklift fleet. Alliance Chemical has operated as a chemical distributor since 1998, shipping from our warehouse at 204 S Edmond St in Taylor, Texas, and serving over 50,000 customers across industrial, municipal, and laboratory markets. All shipping and handling guidance on this page is reviewed by Andre Taki, DOT Hazmat Specialist.
