Calcium chloride hexahydrate

CAS Number

7774-34-7

EC Number

616-496-2

Industries: Water & Wastewater Treatment Food & Nutrition Oil, Gas & Energy

What is Calcium chloride hexahydrate?

Calcium chloride hexahydrate (CAS 7774-34-7), or CaCl2·6H2O, is the fully hydrated crystalline form of calcium chloride.

Where is Calcium chloride hexahydrate used?

Food processing: firming agent and preservative in canned vegetables, tofu and cheese making, restoring calcium ions lost during pasteurization
Oil and gas: completion and workover brines, high density and solubility controlling wellbore pressure without solids
Construction: accelerates cement hydration, shortening set times in cold-weather pours
Water treatment: calcium hardness correction
It also functions as a desiccant, brine agent, setting accelerator and preservation aid.

Good to know: Highly hygroscopic; store in a cool, dry environment.

Commercial specifications

Packaging from 25 kg bags to bulk quantities

Other Names (Synonyms)

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What are the physical properties of Calcium chloride hexahydrate?

Melting Point 29-30 °C

Density 1.71 g/cm³ (solid)

Appearance solid

Color Colorless

Odor Odorless

Form Solid

Water Solubility 5360 g/L (20 ºC)

Refractive Index 1.52

pH 5.0-7.0 (25℃, 1M in H2O)

Log P -1.380 (est)

How is Calcium chloride hexahydrate classified and handled safely? Learn More

Warning

GHS07· Irritant

Hazard Statements

H319 Causes serious eye irritation

Precautionary Statements

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P264+P265 Wash … thoroughly after handling.

P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Which trade and regulatory codes apply to Calcium chloride hexahydrate?

HS Code 28272000

Storage Class 13 - Non Combustible Solids

WGK (Germany) 1