Lithium chloride · LiCl
Lithium chloride (LiCl) is a brine salt; this page gives computed density, dynamic viscosity and specific heat capacity for aqueous solutions from 5–20 wt% and -40–40 °C.
Values are computed from CoolProp's incompressible aqueous-mixture correlation (Melinder, 2010) and tabulated over 5–20 wt% and -40–40 °C.
- Also known as
- Lithium muriate
- CAS number
- 7447-41-8
- Tabulated range
- 5–20 wt% · -40–40 °C
- Properties
- Density · Dynamic viscosity · Specific heat capacity · Specific gravity
- Density
- 1115.5kg/m³
- Density
- 1.1155g/cm³
- Specific gravity
- 1.118
- Viscosity
- 2.112cP
- Specific heat
- 3257J/kg·K
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 5–20 wt% and -40–40 °C range, and every number is interpolated from the committed table below — nothing is computed from a chemistry model in your browser.
Values are interpolated between the tabulated grid points below — sliders stay within the validated 5–20 wt% and -40–40 °C range.
- Density
- 1073.4 kg/m³
- Density
- 1.0734 g/cm³
- Specific gravity
- 1.075
- Dynamic viscosity
- 1.592 cP
- Specific heat
- 3537 J/kg·K
What the numbers tell you
At 20 wt% and 20 °C, aqueous lithium chloride has a density of about 1116 kg/m³ (1.115 g/cm³) — roughly 1.12× the density of water. It also has a dynamic viscosity of about 2.112 cP, against roughly 1 cP for water at the same temperature, and a specific heat of about 3.26 kJ/kg·K, about 78% 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.
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% LiCl | °C | Density kg/m³ | SG | Viscosity cP | Sp. heat J/kg·K |
|---|---|---|---|---|---|
| 5 | 20 | 1026.9 | 1.029 | 1.187 | 3914 |
| 10 | 20 | 1055.8 | 1.058 | 1.412 | 3670 |
| 15 | 20 | 1085.1 | 1.087 | 1.712 | 3448 |
| 20 | 20 | 1115.5 | 1.118 | 2.112 | 3257 |
How low it protects
Freezing point of the aqueous solution against strength, computed from the same correlation and checked against an independently cited value. A 20 wt% lithium chloride solution freezes at about −43.9 °C.
| wt% LiCl | Freezing point °C |
|---|---|
| 5 | −5.1 |
| 10 | −12.2 |
| 15 | −23.9 |
| 20 | −43.9 |
Freeze check: 10 wt% computed −12.2 °C against a cited −12.6 °C (tolerance ±1.5 °C). CRC Handbook of Chemistry and Physics - Concentrative Properties of Aqueous Solutions. CRC Handbook of Chemistry and Physics, Concentrative Properties of Aqueous Solutions, Lithium chloride (LiCl) table: 10.0 mass % at 20 degC, freezing point depression = 12.61 degC (freezing point about -12.6 degC). The CRC freezing-point-depression column agrees with the Melinder freeze curve underlying CoolProp's INCOMP::MLI to within 0.5 degC here.
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:
- ▸Melinder, A. (2010). Properties of Secondary Working Fluids for Indirect Systems, 2nd ed. International Institute of Refrigeration - the basis of CoolProp's incompressible aqueous lithium chloride (INCOMP::MLI) correlation.
- ▸CRC Handbook of Chemistry and Physics - Concentrative Properties of Aqueous Solutions (density, freezing-point depression and viscosity at 20 degC)
Model: CoolProp==6.6.0 - incompressible aqueous MLI correlation (Melinder 2010) · Generated 2026-06-07
The committed data file for this page is published as JSON on GitHub under CC BY 4.0.
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 | 1115 kg/m3 |
| Model computed | 1115.46 kg/m3 |
| Error vs reference | 0.041% (tolerance 1%) |
CRC Handbook of Chemistry and Physics - Concentrative Properties of Aqueous Solutions. CRC Handbook of Chemistry and Physics, Concentrative Properties of Aqueous Solutions (all data at 20 degC), Lithium chloride (LiCl) table: 20.0 mass % at 20 degC = 1.1150 g/cm3. This measured handbook data is independent of the Melinder correlation underlying CoolProp's INCOMP::MLI.
Every tabulated point
Rows are temperature (°C); columns are concentration (wt% LiCl). Read the cell at the intersection. Specific gravity is density divided by the model water reference of 998.2 kg/m³ at 20 °C.
Cells left blank (—) sit below the solution's freezing point at that strength, where it is no longer liquid; those points are not tabulated and the explorer will not interpolate across them.
| °C \ wt% | 5 | 10 | 15 | 20 |
|---|---|---|---|---|
| -40 | — | — | — | 1125.9 |
| -35 | — | — | — | 1125.6 |
| -30 | — | — | — | 1125.2 |
| -25 | — | — | — | 1124.7 |
| -20 | — | — | 1091.8 | 1124.0 |
| -15 | — | — | 1091.4 | 1123.3 |
| -10 | — | 1060.4 | 1090.9 | 1122.5 |
| -5 | 1030.0 | 1060.1 | 1090.3 | 1121.6 |
| 0 | 1029.9 | 1059.6 | 1089.5 | 1120.6 |
| 5 | 1029.5 | 1058.9 | 1088.6 | 1119.4 |
| 10 | 1028.9 | 1058.0 | 1087.5 | 1118.2 |
| 15 | 1028.0 | 1057.0 | 1086.3 | 1116.9 |
| 20 | 1026.9 | 1055.8 | 1085.1 | 1115.5 |
| 25 | 1025.6 | 1054.5 | 1083.7 | 1113.9 |
| 30 | 1024.2 | 1053.0 | 1082.1 | 1112.3 |
| 35 | 1022.6 | 1051.5 | 1080.5 | 1110.5 |
| 40 | 1021.0 | 1049.8 | 1078.8 | 1108.7 |
| °C \ wt% | 5 | 10 | 15 | 20 |
|---|---|---|---|---|
| -40 | — | — | — | 22.26 |
| -35 | — | — | — | 16.43 |
| -30 | — | — | — | 12.43 |
| -25 | — | — | — | 9.613 |
| -20 | — | — | 6.303 | 7.600 |
| -15 | — | — | 5.041 | 6.129 |
| -10 | — | 3.424 | 4.118 | 5.036 |
| -5 | 2.420 | 2.848 | 3.430 | 4.209 |
| 0 | 2.046 | 2.410 | 2.907 | 3.574 |
| 5 | 1.755 | 2.071 | 2.502 | 3.078 |
| 10 | 1.524 | 1.804 | 2.181 | 2.685 |
| 15 | 1.339 | 1.589 | 1.924 | 2.369 |
| 20 | 1.187 | 1.412 | 1.712 | 2.112 |
| 25 | 1.061 | 1.263 | 1.535 | 1.898 |
| 30 | 0.953 | 1.136 | 1.383 | 1.719 |
| 35 | 0.861 | 1.024 | 1.250 | 1.565 |
| 40 | 0.779 | 0.924 | 1.131 | 1.431 |
| °C \ wt% | 5 | 10 | 15 | 20 |
|---|---|---|---|---|
| -40 | — | — | — | 2899 |
| -35 | — | — | — | 2929 |
| -30 | — | — | — | 2958 |
| -25 | — | — | — | 2988 |
| -20 | — | — | 3286 | 3018 |
| -15 | — | — | 3306 | 3048 |
| -10 | — | 3615 | 3326 | 3078 |
| -5 | 3917 | 3624 | 3347 | 3108 |
| 0 | 3914 | 3633 | 3367 | 3138 |
| 5 | 3913 | 3642 | 3387 | 3168 |
| 10 | 3913 | 3651 | 3407 | 3197 |
| 15 | 3913 | 3661 | 3428 | 3227 |
| 20 | 3914 | 3670 | 3448 | 3257 |
| 25 | 3916 | 3680 | 3468 | 3287 |
| 30 | 3919 | 3690 | 3488 | 3317 |
| 35 | 3921 | 3699 | 3508 | 3347 |
| 40 | 3924 | 3709 | 3528 | 3376 |
Lithium chloride solution properties at 25 °C
At 25 °C, 5 wt% lithium chloride has a density of about 1025.6 kg/m³, a dynamic viscosity of about 1.061 cP and a specific heat capacity of about 3916 J/kg·K. At 25 °C, 15 wt% lithium chloride has a density of about 1083.7 kg/m³, a dynamic viscosity of about 1.535 cP and a specific heat capacity of about 3468 J/kg·K. At 25 °C, 20 wt% lithium chloride has a density of about 1113.9 kg/m³, a dynamic viscosity of about 1.898 cP and a specific heat capacity of about 3287 J/kg·K.
Before you use these numbers
- ▸CoolProp's incompressible aqueous lithium chloride correlation (INCOMP::MLI), built on Melinder (2010). Tabulated for 5-20 wt% LiCl over -40 to 40 degC. Lithium chloride is a deep-cold secondary brine and desiccant; the Melinder incompressible path is used (over the Laliberte electrolyte correlation) because it carries the freezing line. The freezing point falls steeply with strength, so the table is mostly blank at low concentration and cold temperature: each blank cell sits below the freezing line at that strength, where the solution is no longer liquid, and the explorer will not interpolate across it. The 20 wt% ceiling stays below the model window (about 24 wt%) and below saturation. Concentrations are anhydrous LiCl. Values are for preliminary design; verify against vendor data for critical service.
- ▸Values are tabulated only inside the 5–20 wt% and -40–40 °C ranges shown; the correlation is not extrapolated beyond them here.
- ▸Figures are for a pure lithium 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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- Calcium nitrate Ca(NO3)2
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- Glycerol C3H8O3
- Hydrochloric acid HCl
- Hydrogen peroxide H2O2
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- Iron(III) chloride FeCl3
- Magnesium chloride MgCl2
- Magnesium sulfate MgSO4
- Manganese(II) sulfate MnSO4
- Methanol CH3OH
- Nickel sulfate NiSO4
- Nitric acid HNO3
- Phosphoric acid H3PO4
- Potassium carbonate K2CO3
- Potassium chloride KCl
- Potassium hydroxide KOH
- Potassium nitrate KNO3
- Propylene glycol C3H8O2
- Sodium acetate CH3COONa
- Sodium bicarbonate NaHCO3
- Sodium carbonate Na2CO3
- Sodium chloride NaCl
- Sodium hydroxide NaOH
- Sodium nitrate NaNO3
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- Sucrose C12H22O11
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