Calcium chloride hexahydrate
CAS 7774-34-7
EC 616-496-2
Formula CaCl2.6H2O
MW 219.08 g/mol
Salts & Minerals Water TreatmentFood & NutritionBuilding & ConstructionAgriculture & FeedOil, Gas & Energy pH Regulation & BufferingPreservation & BiocideCatalysisChelation & SequestrationFlame Retardancy
Description
Calcium chloride hexahydrate (CaCl2.6H2O, CAS 7774-34-7) is the fully hydrated crystalline form of calcium chloride, also referenced as calcium chloride 6-hydrate or hydrated calcium chloride. It carries no E-code designation and is classified under HS code 28272000 within the salts and minerals category.
In water treatment, it raises hardness and adjusts pH by releasing calcium ions that buffer alkalinity and support coagulation processes. In oil and gas drilling, it functions as a completion fluid additive, controlling wellbore pressure through density adjustment. Food-grade applications include cheese production, where it restores ionic balance in pasteurised milk to improve curd formation.
Calcium chloride hexahydrate is available in food-grade (FCC), pharmaceutical-grade (Ph.Eur.), and technical grades to meet different procurement requirements. The substance is registered under REACH and supplied in compliance with EU regulatory standards. Typical packaging formats include 25 kg bags and bulk quantities depending on grade specification.
In water treatment, it raises hardness and adjusts pH by releasing calcium ions that buffer alkalinity and support coagulation processes. In oil and gas drilling, it functions as a completion fluid additive, controlling wellbore pressure through density adjustment. Food-grade applications include cheese production, where it restores ionic balance in pasteurised milk to improve curd formation.
Calcium chloride hexahydrate is available in food-grade (FCC), pharmaceutical-grade (Ph.Eur.), and technical grades to meet different procurement requirements. The substance is registered under REACH and supplied in compliance with EU regulatory standards. Typical packaging formats include 25 kg bags and bulk quantities depending on grade specification.
Physical Properties
| 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) |
Safety & Handling (Learn More)
Warning GHS07
H
H319
P
P280P264+P265P337+P317P305+P351+P338
Trade & Regulatory
| HS Code | 28272000 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Other Names
CALCIUM CHLORIDECALCIUM CHLORIDE 6H2OCALCIUM CHLORIDE, HYDRATEDCALCIUM CHLORIDE 6-HYDRATEcalciumdichloridehexahydrateCalcium chloride, hexahydrateCALCII CHLORIDUM HEXAHYDRICUM
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Derivatives
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