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1.02392

Supelco

Calcium chloride

anhydrous, granular ~ 6 - 14 mm

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Synonym(s):
Calcium chloride, Calcium dichloride
Empirical Formula (Hill Notation):
CaCl2
CAS Number:
Molecular Weight:
110.98
MDL number:
UNSPSC Code:
12352302
EC Index Number:
233-140-8
NACRES:
NB.21

Quality Level

assay

~90% (complexometric)

form

solid

potency

2630 mg/kg LD50, skin (Rat)

impurities

≤0.2% Free alkali (as Ca(OH)2)

pH

8-10 (20 °C, 100 g/L in H2O)

mp

772 °C

density

2.15 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/Ca.2ClH/h;2*1H/q+2;;/p-2

InChI key

UXVMQQNJUSDDNG-UHFFFAOYSA-L

Application


  • Fixed-Bed Column Studies: Continuous fixed-bed column studies utilize Congo red to investigate the adsorption capabilities of various natural adsorbents, such as Nelumbo nucifera (lotus) leaf adsorbent. These studies help in understanding the dynamics of dye removal in real-world applications, providing valuable data for scaling up adsorption processes for industrial wastewater treatment (Vairavel and Rampal, International Journal of Environmental Analytical Chemistry, 2021).

  • Nanocomposite Adsorbents: Congo red is used in studies involving nanocomposite adsorbents, such as calcined ZnAl-LDH (layered double hydroxides) trapped in alginate beads. These studies explore the adsorption efficiency, regeneration, and reusability of nanocomposites for removing dyes from water, contributing to the development of advanced materials for environmental cleanup (El Khanchaoui et al., International Journal of Environmental Analytical Chemistry, 2021).


Analysis Note

Assay (complexometric): about 90
Free alkali (as Ca(OH)₂): ≤ 0.2 %
Water absorption capacity (24 hrs.,80 % relative humidity): ≥ 20 %

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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