Functional Roles
Industries Served
Physical Properties
physical_description
Extremely hygroscopic; [Merck Index] Off-white sticky solid; [EFSA: DAR - Vol. 1]
color/form
Clear yellow liquid /commercial aqueous solution/
odor
Mushroom-like odor
boiling_point
>180 u00b0C; decomposes before boiling at 1 atm /OECD Guideline 103/
melting_point
94-100 u00b0C /OECD Guideline 102/
solubility
In isopropanol: 827, 797 and 836 g/L at 10, 20 and 30 u00b0C, respectively; in-octanol: 248 g/L at 20 u00b0C; in hexane: 0.000424 g/L at 10 u00b0C
density
Colorless liquid. Density: 0.870 g/mL; pH 7.81 /Bardac 2280/
vapor_pressure
<4.3X10-5 mm Hg at 25 u00b0C, <1.1X10-5 mm Hg at 20 u00b0C /OECD Guideline 104/
logp
log Kow = 2.59 at 20 u00b0C, pH 7
decomposition
When heated to decomposition it emits very toxic fumes of /nitrogen oxides, ammonia, and hydrogen chloride/.
corrosivity
Anion is corrosive ... treated wood has the disadvantage of being incompatible with many paints and coatings
ph
pH = 6.8 to 6.9 at 25 u00b0C in a 29.5% water solution
surface_tension
25.82 mN/m at 20 u00b0C, 1 g/L solution
other_experimental_properties
Extremely hygroscopic
GHS / SDS Safety
Danger
Acute Toxic
Environmental Hazard
Irritant
Health Hazard
Corrosive
- H410 (22.4%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H302: Harmful if swallowed [Warning Acute toxicity, oral]
- H411 (34.7%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
- H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H330: Fatal if inhaled [Danger Acute toxicity, inhalation]
- H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]
- H312: Harmful in contact with skin [Warning Acute toxicity, dermal]
- H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
- H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
- H400 (47.6%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H301 (15.2%): Toxic if swallowed [Danger Acute toxicity, oral]
- H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
- H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]
- H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
- H302 (85.8%): Harmful if swallowed [Warning Acute toxicity, oral]
- H301: Toxic if swallowed [Danger Acute toxicity, oral]
- H318 (28.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Chemical Identity
| CAS Number | 7173-51-5 |
| IUPAC Name | didecyl(dimethyl)azanium chloride |
| InChI Key | RUPBZQFQVRMKDG-UHFFFAOYSA-M |
| PubChem CID | 23558 |
| INCI Name | DIDECYLDIMONIUM CHLORIDE |
Synonyms & Trade Names
Full Description
Didecyldimethylammonium Chloride (DDAC) is a cationic surfactant that provides biocidal activity and conditioning properties in industrial formulations. This quaternary ammonium compound is utilized across agriculture, beauty & personal care, HI&I cleaning, industrial manufacturing, oil & gas, and textile applications. DDAC exhibits a melting point of 94-100°C and demonstrates solubility in isopropanol ranging from 797-836 g/L depending on temperature.