Water

CAS Number
7732-18-5
EC Number
231-791-2

What is Water?

Water (CAS 7732-18-5), also known as purified water or distilled water, is the foundational solvent and carrier medium in manufacturing and processing.

Where is Water used?

  • Pharmaceutical and nutraceutical manufacturing: process solvent, excipient diluent, and equipment rinse medium meeting compendial standards
  • Food and beverage production: direct ingredient, process water, and carrier for flavors, colorants, and functional additives
  • Industrial and household cleaning: primary carrier delivering surfactants, builders, and disinfectants at working concentrations
  • Water treatment: diluting treatment chemicals, preparing dosing solutions, and calibrating analytical systems
  • It dissolves, dilutes, suspends, and transports active ingredients in formulations.

Good to know: Purified and distilled grades are produced to USP, Ph. Eur., and BP monographs; conductivity and total organic carbon limits define pharmaceutical suitability.

Commercial specifications

  • Liquid in bulk tankers, IBCs, and drums

Other Names (Synonyms)

Distilled water|Dihydrogen oxide|Purified water|Sterile water|Water vapor|Water, deionized|aqua|oxidane

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What are the physical properties of Water?

Melting Point 0 °C
Boiling Point 100 °C
Density 1.3019 g/cm³
Flash Point 100°C
Appearance colourless liquid
Color colorless
Odor Odorless
Form powder
Water Solubility Soluble in water. Insoluble in polar liquids.
Vapor Pressure 3 mm Hg ( 37 °C)
Refractive Index n 20/D 1.34(lit.)
pH 14 (H2O, 20°C)
Log P -1.380 (est)

Which trade and regulatory codes apply to Water?

HS Code 28530010
Storage Class 12 - Non Combustible Liquids
WGK (Germany) nwg
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