Difference between revisions of "Calcium chloride"
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The anhydrous form of calcium chloride is very [[hygroscopic]]. It is used as a desiccant. Calcium chloride also exists as dihydrate and hexahydrate crystals. These crystalline forms are used in antifreeze solutions, fire extinguishers, fireproofing solutions, wood preservatives, as a gelling agent for [[starch]] size and to [[ice melter|melt snow and ice]] from roads. Calcium chloride was used to speed up the rate of cure in [[mortar%20%28masonry%29|mortar]], [[shotcrete]], and dry-mix [[concrete]] until 1973 when it was replaced by a non-chloride accelerator because it corroded [[steel]] reinforcements. | The anhydrous form of calcium chloride is very [[hygroscopic]]. It is used as a desiccant. Calcium chloride also exists as dihydrate and hexahydrate crystals. These crystalline forms are used in antifreeze solutions, fire extinguishers, fireproofing solutions, wood preservatives, as a gelling agent for [[starch]] size and to [[ice melter|melt snow and ice]] from roads. Calcium chloride was used to speed up the rate of cure in [[mortar%20%28masonry%29|mortar]], [[shotcrete]], and dry-mix [[concrete]] until 1973 when it was replaced by a non-chloride accelerator because it corroded [[steel]] reinforcements. | ||
| − | + | == Risks == | |
| − | == | + | * Contact may cause irritation. |
| + | * LabChem: [https://www.labchem.com/tools/msds/msds/75446.pdf MSDS] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
Soluble in water (with the evolution of heat). pH = 8 - 9 | Soluble in water (with the evolution of heat). pH = 8 - 9 | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 772 | + | | 772 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.152 | + | | 2.152 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 27: | Line 30: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | >1600 | + | | >1600 C |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
| − | |||
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 140 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 140 | ||
Revision as of 13:29, 18 May 2022
Description
The anhydrous form of calcium chloride is very Hygroscopic. It is used as a desiccant. Calcium chloride also exists as dihydrate and hexahydrate crystals. These crystalline forms are used in antifreeze solutions, fire extinguishers, fireproofing solutions, wood preservatives, as a gelling agent for Starch size and to melt snow and ice from roads. Calcium chloride was used to speed up the rate of cure in mortar, Shotcrete, and dry-mix Concrete until 1973 when it was replaced by a non-chloride accelerator because it corroded Steel reinforcements.
Risks
- Contact may cause irritation.
- LabChem: MSDS
Physical and Chemical Properties
Soluble in water (with the evolution of heat). pH = 8 - 9
| Composition | CaCl2 |
|---|---|
| CAS | 10043-52-4 |
| Melting Point | 772 C |
| Density | 2.152 g/ml |
| Molecular Weight | mol. wt. = 110.98 |
| Boiling Point | >1600 C |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 140
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
- Thomas C. Jester (ed.), Twentieth-Century Building Materials, McGraw-Hill Companies, Washington DC, 1995
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1630