| Identification | More | [Name]
CHROMIUM (III) HYDROXIDE N-HYDRATE | [CAS]
1308-14-1 | [Synonyms]
CHROMIUM (III) HYDROXIDE N-HYDRATE
chromic(iii)hydroxide
chromicacid(h3cro3)
chromichydrate
Chromichydroxide
chromicoxide,hydrous
chromicoxidegel
chromium(3+)hydroxide
chromium(iii)hydroxide
chromiumhydroxide(cr(oh)3)
chromiumtrihydroxide
dichromiumtrioxidehydrate
Chromium(Ⅲ) hydroxide
chromium hydrat
Chromic trihydroxide: (Chromic(III) acid)
Chromium(III)trihydoxide
Chromium(III)trihydroxide
Trihydroxychromium(III) | [EINECS(EC#)]
215-158-8 | [Molecular Formula]
CrH5O4 | [MDL Number]
MFCD00216837 | [Molecular Weight]
121.03 | [MOL File]
1308-14-1.mol |
| Chemical Properties | Back Directory | [Appearance]
Green, gelatinous precipitate. Decomposes to chromic oxide by heat. Insoluble in water;
soluble in acids and strong alkalies. | [density ]
1.36[at 20℃] | [vapor pressure ]
0Pa at 20℃ | [solubility ]
insoluble in H2O; soluble in acid solutions | [form ]
blue-green powder | [color ]
blue-green | [PH]
7.04(1 mM solution);7.04(10 mM solution);7.04(100 mM solution) | [Water Solubility ]
insoluble H2O; soluble dilute mineral acids when freshly prepared [MER06] | [Solubility Product Constant (Ksp)]
pKsp: 30.2 | [LogP]
1 at 20℃ | [Uses]
Guignet’s green, catalyst, tanning agent, mordant. | [CAS DataBase Reference]
1308-14-1(CAS DataBase Reference) | [EPA Substance Registry System]
Chromium(III) hydroxide (1308-14-1) |
| Hazard Information | Back Directory | [Chemical Properties]
Green, gelatinous precipitate. Decomposes to chromic oxide by heat. Insoluble in water;
soluble in acids and strong alkalies. | [Physical properties]
Bluish-green powder or green gelatinous precipitate; decomposes to chromium(III) oxide on heating; insoluble in water; soluble in dilute mineral acids when freshly prepared, becoming insoluble on aging; soluble in strong alkalis. | [Preparation]
Chromium(III) hydroxide may be prepared by precipitation from mixing ammonium hydroxide solution with a soluble chromium(III) salt, such as chromium(III) chloride or nitrate:
CrCl3 + 3NH4OH → Cr(OH)3 + 3NH4Cl. | [Toxics Screening Level]
The initial threshold screening level (ITSL) for chromium III hydroxide is 0.5 micrograms per cubic meter (μg/m3) based on a 24-hour averaging time. |
|
|