Salts & brines

Ammonium chloride · NH4Cl

Name: Ammonium chloride (NH4Cl) aqueous solution properties
Creator: ProcessConvert
License: https://creativecommons.org/licenses/by/4.0/

Ammonium chloride (NH4Cl) is a salt; this page gives computed density and dynamic viscosity for aqueous solutions from 2–24 wt% and 15–60 °C.

Values are computed from the Laliberté (2009) aqueous-electrolyte correlation and tabulated over 2–24 wt% and 15–60 °C.

Also known as: Sal ammoniac, Muriate of ammonia, Salmiac
CAS number: 12125-02-9
Tabulated range: 2–24 wt% · 15–60 °C
Properties: Density · Dynamic viscosity · Specific gravity

At 20 wt% · 20 °C

reference snapshot

Density: 1056.3kg/m³
Density: 1.0563g/cm³
Specific gravity: 1.058
Viscosity: 0.984cP

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 2–24 wt% and 15–60 °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 2–24 wt% and 15–60 °C range.

Concentration13 wt%

Temperature20 °C

Density: 1036.3 kg/m³
Density: 1.0362 g/cm³
Specific gravity: 1.038
Dynamic viscosity: 0.976 cP

Density (kg/m³) vs wt% NH4Cl at 20 °C — Ammonium chloride.

Why it matters

What the numbers tell you

At 20 wt% and 20 °C, aqueous ammonium chloride has a density of about 1056 kg/m³ (1.056 g/cm³) — roughly 1.06× the density of water. It also has a dynamic viscosity of about 0.984 cP, against roughly 1 cP for water at the same temperature. Those differences carry straight into volume-to-mass conversions, pump and pipe sizing.

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% NH4Cl	°C	Density kg/m³	SG	Viscosity cP
4	20	1010.0	1.012	0.990
10	20	1027.6	1.029	0.978
20	20	1056.3	1.058	0.984
24	20	1067.5	1.069	1.000

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
▸Perry's Chemical Engineers' Handbook, 7th ed. (Perry & Green) - Table 2-37 Ammonium Chloride density, from International Critical Tables, Vol. III
▸CRC Handbook of Chemistry and Physics - Concentrative Properties of Aqueous Solutions (viscosity at 20 degC)
▸IUPAC-NIST Solubility Data Series, Vol. 47 (Cohen-Adad & Lorimer eds.) - NH4Cl-H2O critical evaluation (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	1056.7 kg/m3
Model computed	1056.26 kg/m3
Error vs reference	0.042% (tolerance 1%)

Perry's Chemical Engineers' Handbook, 7th ed. (from International Critical Tables). Perry, R.H. & Green, D.W. (eds.), Perry's Chemical Engineers' Handbook, 7th ed., Table 2-37 Ammonium Chloride (NH4Cl) (data from International Critical Tables, Vol. III): 20 wt% NH4Cl at 20 degC = 1.0567 g/cm3. The identical value appears in the CRC Concentrative Properties of Aqueous Solutions table at 20 degC.

Full tables

Every tabulated point

Rows are temperature (°C); columns are concentration (wt% NH4Cl). 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
15	1005.0	1010.9	1016.8	1022.7	1028.6	1034.4	1040.2	1046.0	1051.7	1057.5	1063.2	1068.8
20	1004.1	1010.0	1015.9	1021.7	1027.6	1033.4	1039.1	1044.9	1050.6	1056.3	1061.9	1067.5
25	1002.9	1008.8	1014.7	1020.5	1026.3	1032.1	1037.8	1043.5	1049.2	1054.9	1060.5	1066.0
30	1001.5	1007.4	1013.2	1019.1	1024.8	1030.6	1036.3	1042.0	1047.7	1053.3	1058.9	1064.4
35	999.9	1005.8	1011.6	1017.4	1023.2	1028.9	1034.7	1040.3	1046.0	1051.6	1057.1	1062.6
40	998.1	1004.0	1009.8	1015.6	1021.4	1027.1	1032.8	1038.5	1044.1	1049.7	1055.3	1060.8
45	996.1	1002.0	1007.8	1013.7	1019.4	1025.2	1030.9	1036.6	1042.2	1047.8	1053.3	1058.8
50	994.0	999.8	1005.7	1011.5	1017.3	1023.1	1028.8	1034.5	1040.1	1045.7	1051.2	1056.7
55	991.6	997.6	1003.4	1009.3	1015.1	1020.9	1026.6	1032.3	1037.9	1043.5	1049.1	1054.6
60	989.2	995.1	1001.0	1006.9	1012.7	1018.5	1024.3	1030.0	1035.7	1041.3	1046.8	1052.4

Dynamic viscosity — cP (mPa·s)

°C \ wt%	2	4	6	8	10	12	14	16	18	20	22	24
15	1.127	1.116	1.106	1.098	1.090	1.085	1.081	1.080	1.080	1.083	1.089	1.098
20	0.996	0.990	0.985	0.981	0.978	0.976	0.976	0.977	0.979	0.984	0.991	1.000
25	0.888	0.886	0.884	0.883	0.883	0.884	0.885	0.888	0.893	0.899	0.906	0.916
30	0.797	0.798	0.799	0.800	0.802	0.804	0.808	0.812	0.818	0.825	0.833	0.843
35	0.721	0.723	0.726	0.729	0.732	0.736	0.741	0.747	0.753	0.761	0.770	0.781
40	0.656	0.660	0.663	0.668	0.672	0.677	0.683	0.690	0.697	0.706	0.715	0.726
45	0.600	0.605	0.610	0.615	0.620	0.626	0.633	0.640	0.648	0.657	0.667	0.678
50	0.552	0.557	0.563	0.568	0.575	0.581	0.588	0.596	0.605	0.614	0.624	0.636
55	0.510	0.516	0.522	0.528	0.535	0.542	0.549	0.557	0.566	0.576	0.586	0.598
60	0.473	0.479	0.485	0.492	0.499	0.507	0.514	0.523	0.532	0.542	0.552	0.564

Typical values

Ammonium chloride solution properties at 25 °C

At 25 °C, 4 wt% ammonium chloride has a density of about 1008.8 kg/m³ and a dynamic viscosity of about 0.886 cP. At 25 °C, 20 wt% ammonium chloride has a density of about 1054.9 kg/m³ and a dynamic viscosity of about 0.899 cP. At 25 °C, 24 wt% ammonium chloride has a density of about 1066.0 kg/m³ and a dynamic viscosity of about 0.916 cP.

Limitations

Before you use these numbers

▸Laliberte (2009) aqueous-electrolyte correlation for NH4Cl-water, density and viscosity. Tabulated for 2-24 wt% over 15-60 degC. Saturation is about 26 wt% NH4Cl at 15 degC, rising to about 35 wt% at 60 degC, so the 24 wt% ceiling keeps the cold end of the table below saturation. Dilute ammonium chloride is slightly less viscous than water (a known electrolyte effect) before viscosity rises again at higher strength. Heat capacity is not tabulated: the correlation's NH4Cl heat-capacity data covers only dilute solutions (to about 14 wt%), so it is omitted rather than extrapolated. Concentrations are NH4Cl by mass. Values are for preliminary design; verify against vendor data for critical service.
▸Values are tabulated only inside the 2–24 wt% and 15–60 °C ranges shown; the correlation is not extrapolated beyond them here.
▸Figures are for a pure ammonium 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.

Related calculators

Related guides

Other substances

← All substances

Built and reviewed by a practising process engineer. About ProcessConvert →