Constituent water ice | SSHADE

Experiment VIS-NIR reflectance spectra collected during low-temperature and near-vacuum sublimation of compact slabs of salty ice produced by slowly freezing solutions of MgSO4 with three different concentrations

Sub-Experiment Compact slab of pure H2O ice

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=1.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=2.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=2.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=3.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=3.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=4.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=4.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=5.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=6.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=7.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=8.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=11.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=13.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=14.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=44.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a pure H2O ice slab (t=46.0 hours)

Sub-Experiment Compact slab of salty H2O ice (10 wt.% MgSO4)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=1.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=2.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=2.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=3.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=3.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=4.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=4.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=5.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=6.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=7.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=8.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=11.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=13.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=14.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=44.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (10 wt.% MgSO4) (t=46.0 hours)

Sub-Experiment Compact slab of salty H2O ice (20 wt.% MgSO4)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=1.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=2.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=2.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=3.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=3.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=4.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=4.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=5.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=6.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=7.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=8.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=11.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=13.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=14.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=44.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (20 wt.% MgSO4) (t=46.0 hours)

Sub-Experiment Compact slab of salty H2O ice (30 wt.% MgSO4)

Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=0.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=0.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=1.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=1.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=2.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=2.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=3.2 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=3.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=4.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=4.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=5.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=5.5 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=6.6 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=7.7 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=8.8 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=9.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=11.0 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=12.1 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=13.3 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=14.4 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=44.9 hours) Spectrum VIS-NIR reflectance spectrum collected during sublimation of a salty H2O ice slab (30 wt.% MgSO4) (t=46.0 hours)

Constituent

Name: water ice
Official name: Water ice Ih

Family: molecular solid
Class: hydrogen bonded molecular solid
Compound type: inorganic molecular solid

Constituent abundance in material

Relevance: main - major
Arrangement: matrix
Mass fraction: 80.0 $\pm$ 0.1

Chemical composition

Formula: $H_2O$
Chemical formula: H2O
Elemental formula: H2 O
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$H_2O$	Water	molecule	1	1.0	1.0	pure	main

Chemical functions and bonds

Chemical functions

	Function	Number	Relevance
	$R-OH$	2	main

Chemical bonds

	Bond	Number	Relevance
	$-O \dots H-$	4
	$-O-H$	2	main

Oxides composition

Oxides

Formula	$H_{2}O$
Mass fraction (%)	1.0

Class: molecular solids with hydrogen bonded molecules (03)
Type: homomolecular H-bonded solids (03.01)

Phase name: H2O Ih
Phase type: crystalline

Crystallography

Crystal system: hexagonal
Crystal class: dihexagonal-dipyramidal
Crystal class symbol: 6/mmm (D6h)
Crystal spacegroup: P6(3)/mmc

Physical properties

Molar mass: 18.0153 $g/mol$
Density: 0.917 (273 K) - 0.928 (90 K) $g/cm^3$

Optical properties

Refringence type: uniaxial
Refringence sign: unknown
Birefringence: 0.01
Refraction index $n_{\alpha}$: 1.31
Refraction index $n_{\beta}$: 1.33
Color: light blue (when thick)
Diaphaneity: transparent
Luster: vitreous