Table 5. Open in new tab Densities of 12...

		Our laboratory	Literature^b
1	H₂O, water	150	0.931	0.935	143
2	NH₃, ammonia	95	0.834	0.861	77
3	HCN, hydrogen cyanide	120	1.037	1.030	153
4	CO₂, carbon dioxide	70	1.666	1.643	150
5	N₂O, nitrous oxide	70	1.591	1.60	77
6	N₂, nitrogen	19	1.013	1.03	19
7	NH₄CN, ammonium cyanide	125	1.108	1.13	194
8	H₂S, hydrogen sulfide	80	1.224	1.230	80
9	OCS, carbonyl sulfide	50	1.518	1.549	90
10	SO₂, sulfur dioxide	85	1.893	1.92	143
11	CO, carbon monoxide (α)	25	1.029	1.033	25
12	Ar, argon	30	1.747	1.754	30

		Our laboratory	Literature^b
1	H₂O, water	150	0.931	0.935	143
2	NH₃, ammonia	95	0.834	0.861	77
3	HCN, hydrogen cyanide	120	1.037	1.030	153
4	CO₂, carbon dioxide	70	1.666	1.643	150
5	N₂O, nitrous oxide	70	1.591	1.60	77
6	N₂, nitrogen	19	1.013	1.03	19
7	NH₄CN, ammonium cyanide	125	1.108	1.13	194
8	H₂S, hydrogen sulfide	80	1.224	1.230	80
9	OCS, carbonyl sulfide	50	1.518	1.549	90
10	SO₂, sulfur dioxide	85	1.893	1.92	143
11	CO, carbon monoxide (α)	25	1.029	1.033	25
12	Ar, argon	30	1.747	1.754	30

Table 5.

Densities of 12 crystalline inorganic ices.^a

		Our laboratory		Literature^b
No.	Formula, name	T	ρ	ρ	T
1	H₂O, water	150	0.931	0.935	143
2	NH₃, ammonia	95	0.834	0.861	77
3	HCN, hydrogen cyanide	120	1.037	1.030	153
4	CO₂, carbon dioxide	70	1.666	1.643	150
5	N₂O, nitrous oxide	70	1.591	1.60	77
6	N₂, nitrogen	19	1.013	1.03	19
7	NH₄CN, ammonium cyanide	125	1.108	1.13	194
8	H₂S, hydrogen sulfide	80	1.224	1.230	80
9	OCS, carbonyl sulfide	50	1.518	1.549	90
10	SO₂, sulfur dioxide	85	1.893	1.92	143
11	CO, carbon monoxide (α)	25	1.029	1.033	25
12	Ar, argon	30	1.747	1.754	30

		Our laboratory		Literature^b
No.	Formula, name	T	ρ	ρ	T
1	H₂O, water	150	0.931	0.935	143
2	NH₃, ammonia	95	0.834	0.861	77
3	HCN, hydrogen cyanide	120	1.037	1.030	153
4	CO₂, carbon dioxide	70	1.666	1.643	150
5	N₂O, nitrous oxide	70	1.591	1.60	77
6	N₂, nitrogen	19	1.013	1.03	19
7	NH₄CN, ammonium cyanide	125	1.108	1.13	194
8	H₂S, hydrogen sulfide	80	1.224	1.230	80
9	OCS, carbonyl sulfide	50	1.518	1.549	90
10	SO₂, sulfur dioxide	85	1.893	1.92	143
11	CO, carbon monoxide (α)	25	1.029	1.033	25
12	Ar, argon	30	1.747	1.754	30

Temperatures are in kelvins and densities are in g cm⁻³. See also Yarnall & Hudson (2022b).

H₂O: Blackman and Lisgarten (1957), NH₃ Olovsson and Templeton (1959), HCN: Dulmage and Lipscomb (1951), CO₂: Simon and Peters (1980), CO₂, N₂O: de Smedt and Keesom (1924), N₂O: Hamilton and Petrie (1961), N₂: Maynard-Casely, Hester & Brand (2020), NH₄CN: Lely and Bijoet (1944), H₂S: Calculated from Cockcroft and Fitch (1990), OCS: Overell, Pawley & Powell (1982), SO₂: Post, Schwartz & Fankuchen (1952), CO: Wang et al. (2020). Interpolation of the densities at 24 and 26 K in Krupski et al. (1973) gives 1.026 g cm⁻³, Ar: Sinnock & Smith (1969).

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