Salts & brines

Calcium chloride · CaCl2

Name: Calcium chloride (CaCl2) aqueous solution properties
Creator: ProcessConvert
License: https://creativecommons.org/licenses/by/4.0/

Calcium chloride (CaCl2) is a salt; this page gives computed density, dynamic viscosity and specific heat capacity for aqueous solutions from 2–34 wt% and 0–80 °C.

Values are computed from the Laliberté (2009) aqueous-electrolyte correlation and tabulated over 2–34 wt% and 0–80 °C.

Also known as: Calcium dichloride, Calcium chloride brine
CAS number: 10043-52-4
Tabulated range: 2–34 wt% · 0–80 °C
Properties: Density · Dynamic viscosity · Specific heat capacity · Specific gravity

At 20 wt% · 20 °C

reference snapshot

Density: 1177.8kg/m³
Density: 1.1778g/cm³
Specific gravity: 1.180
Viscosity: 1.930cP
Specific heat: 3129J/kg·K

Explore

Read a value at any point

Move the sliders to interpolate between the tabulated grid points. The readout and chart never go outside the validated 2–34 wt% and 0–80 °C range, and every number is interpolated from the committed table below — nothing is computed from a chemistry model in your browser.

Interactive explorer

Values are interpolated between the tabulated grid points below — sliders stay within the validated 2–34 wt% and 0–80 °C range.

Concentration18 wt%

Temperature20 °C

Density: 1158.0 kg/m³
Density: 1.1580 g/cm³
Specific gravity: 1.160
Dynamic viscosity: 1.783 cP
Specific heat: 3215 J/kg·K

Density (kg/m³) vs wt% CaCl2 at 20 °C — Calcium chloride.

Why it matters

What the numbers tell you

At 20 wt% and 20 °C, aqueous calcium chloride has a density of about 1178 kg/m³ (1.178 g/cm³) — roughly 1.18× the density of water. It also has a dynamic viscosity of about 1.930 cP, against roughly 1 cP for water at the same temperature, and a specific heat of about 3.13 kJ/kg·K, about 75% of water’s 4.18 kJ/kg·K. Those differences carry straight into volume-to-mass conversions, pump and pipe sizing, and the heat needed to change its temperature.

Common grades

A few working strengths

Properties at 20 °C for a handful of concentrations in everyday use, read from the committed grid (interpolated between tabulated points where a grade falls between them). The full table follows below.

wt% CaCl2	°C	Density kg/m³	SG	Viscosity cP	Sp. heat J/kg·K
10	20	1083.1	1.085	1.368	3603
20	20	1177.8	1.180	1.930	3129
26	20	1239.2	1.241	2.637	2899
32	20	1303.7	1.306	4.069	2709

Sources

Where the numbers come from

Every value on this page is computed by a deterministic model — none is entered by hand. The generating method and the references it is checked against:

▸Laliberte, M. (2009). A Model for Calculating the Heat Capacity of Aqueous Solutions, with Updated Density and Viscosity Data. J. Chem. Eng. Data 54(6), 1725-1760. doi:10.1021/je8008123
▸CRC Handbook of Chemistry and Physics, 97th ed. (Haynes, ed., 2016) - Concentrative Properties of Aqueous Solutions (density and viscosity at 20 degC)
▸CRC Handbook of Chemistry and Physics - Aqueous Solubility of Inorganic Compounds at Various Temperatures (solubility bounds for the tabulated range)

Model: thermo==0.4.0 (chemicals==1.3.0) - Laliberte 2009 electrolyte correlation · Generated 2026-06-07

The committed data file for this page is published as JSON on GitHub under CC BY 4.0.

Validation

Checked against a cited value

The model is cross-checked at one independently cited reference point. The page is published only because this check passes.

Property / point	Density · 20 wt% · 20 °C
Cited reference value	1177.5 kg/m3
Model computed	1177.77 kg/m3
Error vs reference	0.023% (tolerance 1%)

CRC Handbook of Chemistry and Physics, 97th ed.. Haynes, W.M. (ed.), CRC Handbook of Chemistry and Physics, 97th ed. (CRC Press, 2016), Concentrative Properties of Aqueous Solutions, p. 5-119: 20.0 mass % CaCl2 at 20 degC = 1.1775 g/cm3 (primary data: Sohnel & Novotny 1985; Wolf 1966).

Full tables

Every tabulated point

Rows are temperature (°C); columns are concentration (wt% CaCl2). Read the cell at the intersection. Specific gravity is density divided by the model water reference of 998.2 kg/m³ at 20 °C.

Density — kg/m³

°C \ wt%	2	4	6	8	10	12	14	16	18	20	22	24	26	28	30	32	34
0	1016.3	1033.2	1050.5	1068.2	1086.3	1104.9	1123.8	1143.2	1163.1	1183.3	1204.0	1225.1	1246.6	1268.5	1290.7	1313.3	1336.2
5	1016.4	1033.2	1050.4	1068.0	1086.0	1104.4	1123.3	1142.6	1162.3	1182.4	1202.9	1223.8	1245.1	1266.8	1288.8	1311.2	1333.8
10	1016.0	1032.8	1049.9	1067.4	1085.3	1103.7	1122.4	1141.6	1161.1	1181.1	1201.5	1222.2	1243.4	1264.9	1286.7	1308.8	1331.3
15	1015.4	1032.0	1049.0	1066.5	1084.3	1102.6	1121.2	1140.3	1159.7	1179.5	1199.8	1220.4	1241.4	1262.7	1284.4	1306.3	1328.6
20	1014.4	1031.0	1047.9	1065.3	1083.1	1101.2	1119.8	1138.7	1158.0	1177.8	1197.9	1218.4	1239.2	1260.4	1281.9	1303.7	1325.8
25	1013.2	1029.7	1046.6	1063.9	1081.5	1099.6	1118.1	1136.9	1156.2	1175.8	1195.8	1216.2	1236.9	1258.0	1279.3	1301.0	1322.9
30	1011.7	1028.2	1045.0	1062.2	1079.8	1097.8	1116.2	1135.0	1154.1	1173.7	1193.6	1213.8	1234.4	1255.4	1276.6	1298.2	1320.0
35	1010.0	1026.4	1043.2	1060.4	1077.9	1095.8	1114.1	1132.8	1151.9	1171.3	1191.2	1211.4	1231.9	1252.7	1273.9	1295.3	1317.0
40	1008.2	1024.5	1041.2	1058.3	1075.8	1093.7	1111.9	1130.5	1149.5	1168.9	1188.7	1208.8	1229.2	1250.0	1271.0	1292.4	1314.0
45	1006.1	1022.4	1039.1	1056.1	1073.5	1091.3	1109.5	1128.1	1147.0	1166.3	1186.0	1206.1	1226.4	1247.1	1268.1	1289.4	1310.9
50	1003.9	1020.1	1036.7	1053.7	1071.1	1088.9	1107.0	1125.5	1144.4	1163.6	1183.3	1203.2	1223.6	1244.2	1265.2	1286.4	1307.8
55	1001.5	1017.7	1034.3	1051.2	1068.5	1086.2	1104.3	1122.8	1141.6	1160.8	1180.4	1200.4	1220.6	1241.2	1262.1	1283.3	1304.7
60	999.0	1015.1	1031.7	1048.5	1065.8	1083.5	1101.5	1120.0	1138.8	1157.9	1177.5	1197.4	1217.6	1238.2	1259.0	1280.2	1301.6
65	996.3	1012.4	1028.9	1045.7	1063.0	1080.6	1098.6	1117.0	1135.8	1154.9	1174.4	1194.3	1214.5	1235.0	1255.9	1277.0	1298.4
70	993.5	1009.5	1026.0	1042.8	1060.0	1077.6	1095.6	1113.9	1132.7	1151.8	1171.3	1191.1	1211.3	1231.9	1252.7	1273.8	1295.2
75	990.5	1006.6	1023.0	1039.8	1056.9	1074.5	1092.4	1110.8	1129.5	1148.6	1168.1	1187.9	1208.1	1228.6	1249.5	1270.6	1292.0
80	987.4	1003.4	1019.8	1036.6	1053.7	1071.3	1089.2	1107.5	1126.2	1145.3	1164.7	1184.6	1204.8	1225.3	1246.2	1267.3	1288.8

Dynamic viscosity — cP (mPa·s)

°C \ wt%	2	4	6	8	10	12	14	16	18	20	22	24	26	28	30	32	34
0	1.782	1.849	1.984	2.167	2.355	2.520	2.678	2.853	3.065	3.329	3.663	4.086	4.625	5.312	6.196	7.339	8.829
5	1.517	1.578	1.697	1.857	2.020	2.164	2.301	2.452	2.633	2.859	3.143	3.502	3.957	4.537	5.280	6.238	7.485
10	1.309	1.365	1.471	1.611	1.755	1.881	2.001	2.132	2.289	2.484	2.727	3.035	3.424	3.918	4.549	5.361	6.413
15	1.143	1.195	1.289	1.414	1.542	1.654	1.759	1.874	2.011	2.180	2.391	2.657	2.992	3.416	3.957	4.651	5.547
20	1.008	1.056	1.141	1.254	1.368	1.467	1.561	1.662	1.783	1.930	2.115	2.346	2.637	3.004	3.471	4.069	4.838
25	0.898	0.942	1.019	1.121	1.223	1.313	1.396	1.486	1.593	1.723	1.885	2.087	2.342	2.662	3.068	3.586	4.251
30	0.806	0.847	0.917	1.009	1.102	1.183	1.258	1.339	1.433	1.549	1.692	1.870	2.094	2.375	2.730	3.182	3.760
35	0.728	0.766	0.831	0.915	1.000	1.073	1.141	1.213	1.298	1.401	1.528	1.686	1.883	2.131	2.444	2.840	3.346
40	0.662	0.698	0.758	0.835	0.912	0.979	1.041	1.106	1.182	1.274	1.387	1.528	1.704	1.923	2.199	2.549	2.993
45	0.605	0.639	0.694	0.766	0.837	0.898	0.954	1.013	1.081	1.164	1.266	1.392	1.548	1.744	1.989	2.298	2.691
50	0.557	0.588	0.640	0.705	0.771	0.827	0.879	0.932	0.994	1.069	1.160	1.273	1.414	1.588	1.807	2.082	2.430
55	0.514	0.544	0.592	0.653	0.714	0.766	0.812	0.861	0.918	0.985	1.068	1.170	1.296	1.453	1.648	1.894	2.203
60	0.476	0.505	0.549	0.606	0.663	0.711	0.754	0.799	0.850	0.912	0.987	1.079	1.193	1.334	1.509	1.729	2.006
65	0.443	0.470	0.512	0.565	0.618	0.663	0.703	0.744	0.791	0.847	0.915	0.998	1.101	1.229	1.387	1.584	1.832
70	0.414	0.439	0.479	0.529	0.578	0.620	0.657	0.695	0.737	0.788	0.851	0.927	1.020	1.135	1.278	1.456	1.679
75	0.388	0.412	0.449	0.496	0.543	0.581	0.616	0.650	0.690	0.737	0.793	0.863	0.948	1.052	1.182	1.343	1.544
80	0.364	0.387	0.423	0.467	0.511	0.547	0.579	0.611	0.647	0.690	0.742	0.805	0.883	0.978	1.096	1.242	1.423

Specific heat capacity — J/kg·K

°C \ wt%	2	4	6	8	10	12	14	16	18	20	22	24	26	28	30	32	34
0	4087	3959	3836	3716	3601	3491	3385	3284	3188	3096	3008	2926	2848	2775	2706	2643	2584
5	4075	3949	3828	3711	3598	3489	3385	3286	3191	3101	3016	2935	2859	2787	2720	2658	2600
10	4068	3944	3824	3709	3598	3491	3389	3291	3198	3110	3026	2946	2871	2801	2736	2675	2618
15	4063	3941	3823	3709	3600	3495	3394	3298	3206	3119	3037	2959	2885	2816	2752	2692	2636
20	4061	3940	3824	3711	3603	3500	3401	3306	3215	3129	3048	2971	2899	2831	2767	2709	2654
25	4059	3940	3825	3714	3608	3505	3407	3314	3224	3140	3059	2983	2912	2845	2783	2725	2671
30	4059	3941	3827	3717	3612	3511	3414	3321	3233	3149	3070	2995	2925	2859	2797	2740	2688
35	4059	3942	3830	3721	3617	3517	3421	3329	3242	3159	3081	3006	2937	2872	2811	2754	2703
40	4060	3944	3833	3725	3622	3523	3428	3337	3250	3168	3091	3017	2948	2884	2824	2768	2717
45	4061	3946	3835	3729	3626	3528	3434	3344	3258	3177	3100	3027	2959	2895	2835	2780	2730
50	4062	3949	3839	3733	3631	3533	3440	3351	3266	3185	3109	3037	2969	2905	2847	2792	2742
55	4064	3951	3842	3737	3636	3539	3446	3357	3273	3193	3117	3045	2978	2915	2857	2803	2753
60	4067	3954	3846	3741	3641	3544	3452	3364	3280	3200	3125	3053	2987	2924	2866	2812	2763
65	4070	3958	3850	3746	3646	3549	3458	3370	3286	3207	3132	3061	2995	2932	2875	2821	2772
70	4073	3962	3854	3750	3650	3555	3463	3376	3292	3213	3139	3068	3002	2940	2882	2829	2780
75	4077	3966	3858	3755	3655	3560	3468	3381	3298	3219	3145	3074	3008	2947	2889	2836	2787
80	4081	3970	3863	3759	3660	3565	3474	3386	3304	3225	3150	3080	3014	2953	2895	2842	2794

Typical values

Calcium chloride solution properties at 25 °C

At 25 °C, 10 wt% calcium chloride has a density of about 1081.5 kg/m³, a dynamic viscosity of about 1.223 cP and a specific heat capacity of about 3608 J/kg·K. At 25 °C, 26 wt% calcium chloride has a density of about 1236.9 kg/m³, a dynamic viscosity of about 2.342 cP and a specific heat capacity of about 2912 J/kg·K. At 25 °C, 32 wt% calcium chloride has a density of about 1301.0 kg/m³, a dynamic viscosity of about 3.586 cP and a specific heat capacity of about 2725 J/kg·K.

Limitations

Before you use these numbers

▸Laliberte (2009) aqueous-electrolyte correlation for CaCl2-water. Tabulated for 2-34 wt% over 0-80 degC. Saturation at 0 degC is about 37 wt% CaCl2, so the 34 wt% ceiling leaves margin below saturation across the whole table; calcium chloride freezing points fall steeply with strength, so every tabulated point is liquid. The correlation's fitted density data for CaCl2 begins at 15 degC; rows below that are a short extension toward 0 degC (its viscosity data extends to 0 degC) and should be treated as indicative at the cold end. Concentrations are anhydrous CaCl2; commercial flake and liquid grades are specified on an as-sold basis that includes water of hydration. Values are for preliminary design; verify against vendor data for critical service.
▸Values are tabulated only inside the 2–34 wt% and 0–80 °C ranges shown; the correlation is not extrapolated beyond them here.
▸Figures are for a pure calcium chloride–water system. Commercial grades contain impurities (for example chloride in some caustic grades) that shift density and viscosity; check the supplier's data sheet for a specific product.
▸Use for preliminary design; verify for critical service.

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