Deionized Water

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Deionized Water (DI Water), also known as demineralized water, is highly purified water that has had almost all of its mineral ions (such as sodium, calcium, iron, copper, chloride, and sulfate) removed through ion exchange, reverse osmosis, or other purification methods. It is a clear, colorless, odorless liquid with extremely low electrical conductivity and is considered chemically pure. Deionized water is used in applications where water purity is critical, including pharmaceuticals, electronics, cosmetics, laboratory use, and various industrial processes. Its lack of minerals makes it highly reactive with contaminants, which makes it both useful and sensitive in technical applications.

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Categories: Analytical Reagents, Disinfectants and Biocides, pH Adjusters, Solvents (Cleaning), Solvents(pharmaceutical) Tags: Deionized Water, DI Water, Industrial water treatment, Pharmaceutical industry, Purified water

Description

Deionized Water Uses

Primary Uses

Pharmaceuticals & Biotechnology

Used in the formulation of non-parenteral and topical pharmaceutical preparations.
Employed in the cleaning of pharmaceutical equipment to prevent mineral deposits or microbial growth.
Acts as a diluent for drug production and analysis where ionic purity is essential.

Cosmetics & Personal Care

Serves as the primary solvent in formulations for creams, lotions, serums, shampoos, and conditioners.
Ensures product stability and purity by eliminating contaminants that can interact with active ingredients.

Laboratory & Analytical Applications

Used as a solvent and rinse agent in analytical chemistry, titrations, and spectroscopy.
Critical for preparing standards, reagents, and sample dilutions in analytical and research laboratories.

Electronics Manufacturing

Utilized in the rinsing and cleaning of semiconductors, circuit boards, and other electronic components.
Prevents ionic contamination that can disrupt the performance of microelectronic devices.

Automotive & Battery Production

Used as electrolyte preparation water in lead-acid and lithium-ion battery manufacturing.
Included in radiator coolants and windshield washer fluids to prevent mineral scaling and corrosion.

Secondary Uses

Industrial & Power Generation

Employed in boiler feedwater and steam turbines to reduce scaling and corrosion in high-pressure systems.
Used in cooling towers and heat exchangers where mineral content must be strictly controlled.

Food & Beverage Industry

Used for equipment cleaning and ingredient water in beverage production (non-consumption).
Provides a controlled medium in flavor and aroma testing or concentration standardization.

Medical Devices & Hospitals

Rinsing agent for surgical instruments and sterilized equipment to prevent residue buildup.
Used in autoclaves and as a base for preparation of antiseptic solutions.

Textile & Dyeing Industry

Used in dye formulations and rinsing to prevent interaction of minerals with textile dyes.
Ensures consistent color fastness and fabric quality.

Photographic & Printing

Used in developing and fixing photographic films and printing plates.
Prevents streaking, spotting, or haze caused by dissolved salts.

PRODUCT KEY FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Water (H₂O)
Common/Trade Name: Deionized Water
CAS Number: 7732-18-5
HS Code: 2853.90.90
Molecular Formula: H₂O
Synonyms:
- DI Water
- Demineralized Water
- Purified Water (non-sterile)
- Ultrapure Water (depending on grade)

2. Physical & Chemical Properties

Physical State: Liquid
Color & Odor: Clear, colorless, odorless
Melting Point: 0°C
Boiling Point: 100°C at 1 atm
Density: ~1.00 g/cm³ at 25°C
Solubility: Miscible with all solvents
Electrical Conductivity: <1 µS/cm (depending on grade; ultrapure can be <0.1 µS/cm)
pH: 5.5–7.0 (slightly acidic due to dissolved CO₂)
Stability: Chemically stable; highly reactive with contaminants and air-exposed surfaces

3. Safety & Hazard Attributes

Hazard Class (GHS): Not classified as hazardous
NFPA Ratings:
- Health: 0
- Flammability: 0
- Reactivity: 0
Exposure Limits: None established
Toxicity: Non-toxic; however, not suitable for direct human consumption if not microbiologically treated
Reactivity: May leach ions and metals from piping or containers due to high purity

4. Storage & Handling Attributes

Storage Conditions: Store in clean, inert, and non-reactive containers (e.g., HDPE or glass)
Container Type: Closed, non-leaching, sterile or non-sterile containers depending on application
Shelf Life: 6 to 12 months if sealed and uncontaminated
Special Handling: Protect from microbial contamination and airborne particles; use sterile techniques where applicable

5. Regulatory & Compliance Attributes

FDA Status: Complies with USP/NF for Purified Water if validated
Pharmacopoeia Grades:
- USP: Purified Water
- EP: Aqua purificata
- JP: Purified Water
REACH Status: Not classified as a dangerous substance
Transportation: Not regulated
Waste Disposal: Dispose of as non-hazardous liquid; no special handling required

6. Environmental & Health Impact

Ecotoxicity: No known environmental toxicity
Persistence: Fully miscible and naturally integrated into the hydrological cycle
Bioaccumulation: None
Carcinogenicity/Mutagenicity: None
Biodegradability: Not applicable; water is a natural component of the environment

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

Personal Protective Equipment (PPE):

Typically not required under normal conditions
In cleanroom or sterile environments, use gloves and closed systems to prevent contamination

Handling Measures:

Use clean tools and equipment to avoid contamination
Avoid exposure to ambient air for prolonged periods

Storage Measures:

Store in closed, sterile containers if used in pharmaceutical or medical applications
Label containers clearly to avoid confusion with other liquids

Hygiene Practices:

Use aseptic techniques where purity is critical
Avoid reusing containers unless properly sterilized

First Aid Measures

Inhalation: Not applicable
Skin Contact: No irritation expected
Eye Contact: No irritation expected
Ingestion: Non-toxic; not suitable for regular consumption due to lack of essential minerals

Firefighting Measures

Fire Hazards: Non-flammable
Extinguishing Media: Not applicable
Special Precautions: None required

Decomposition Products: None; water remains stable under fire conditions