| Identification | More | [Name]
CHROMIUM(III) NITRATE NONAHYDRATE | [CAS]
7789-02-8 | [Synonyms]
CHROMIC NITRATE
CHROMIC NITRATE 9H2O
CHROMIC NITRATE NONAHYDRATE
CHROMIUM (IC) NITRATE
CHROMIUM (IC) NITRATE NONAHYDRATE
CHROMIUM(III) NITRATE
CHROMIUM(III) NITRATE-9-HYDRATE
CHROMIUM (III) NITRATE ENNEAHYDRATE
CHROMIUM(III) NITRATE NONAHYDRATE
CHROMIUM NITRATE
CHROMIUM NITRATE, HYDROUS
CHROMIUM NITRATE, NONAHYDRATE
Chromium(III)nitrate,nonahydrate(1:3:9)
Chromiumtrinitratenonahydrate
Nitricacid,chromium(3+)salt,nonahydrate
Nonaquochromium trinitrate
CHROMIUM(III) NITRATE-9-HYDRATE PURE
CHROMIUM(III)-NITRATE SOLUTION 65 % CR(NO3)3 9 H2O
CHROMIUM(III) NITRATE NONAHYDRATE 99%
CHROMIUM(III) NITRATE NONAHYDRATE, 99.99 +% | [EINECS(EC#)]
236-921-1 | [Molecular Formula]
CrH18N3O18 | [MDL Number]
MFCD00149659 | [Molecular Weight]
400.15 | [MOL File]
7789-02-8.mol |
| Chemical Properties | Back Directory | [Appearance]
Chromium nitrate is a crystalline substance, variously stated to be green brown or purple and existing in various hydrated forms. | [Melting point ]
60 °C(lit.)
| [Boiling point ]
100°C | [density ]
1.80 g/mL(lit.) | [storage temp. ]
Store at +15°C to +25°C. | [solubility ]
H2O: very soluble(lit.) | [form ]
Solid | [color ]
Violet to black | [PH]
2-3 (50g/l, H2O, 20℃) | [Stability:]
Stable at room temperature, but may explode if heated. Incompatible with organic materials, reducing agents. Use polyethylene tools. | [Water Solubility ]
Soluble in water and alcohol. | [Merck ]
14,2226 | [CAS DataBase Reference]
7789-02-8(CAS DataBase Reference) |
| Safety Data | Back Directory | [Hazard Codes ]
O,Xi | [Risk Statements ]
R8:Contact with combustible material may cause fire.
R36/38:Irritating to eyes and skin . | [Safety Statements ]
S17:Keep away from combustible material .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
UN 2720 5.1/PG 3
| [WGK Germany ]
2
| [RTECS ]
GB6300000
| [F ]
9 | [TSCA ]
Yes | [HazardClass ]
5.1 | [PackingGroup ]
III | [HS Code ]
28342980 | [Toxicity]
LD50 orally in Rabbit: 3250 mg/kg |
| Hazard Information | Back Directory | [Potential Exposure]
Chromium nitrate is used in the preparation of chrome catalysts, in textile printing operations; and as a corrosion inhibitor. Used to make other chemicals. | [First aid]
If chromium nitrate gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek Medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. | [Shipping]
UN2720 Chromium nitrate, Hazard Class: 5.1; Labels: 5.1-Oxidizer | [Incompatibilities]
This chemical is a strong oxidizer. Contact with reducing agents; fuels, ethers, and other flammable and combustible materials cause a fire and explosion hazard. Violent reaction with many compounds, including reducing agents; alcohols, chemically active metals; combustible materials, strong acids, alkaline earth sulfides, aluminum carbides, aluminum, amines, calcium sulfide, carbides, chlorine trifluoride, glycerin, hydrides, hydrochloric acid, hydrogen peroxide, hydrogen sulfide, hydroxylamine, magnesium, metal powders, metal sulfides, molybdenum, phenylhydrazine, phosphorous red/friction, phosphorous trichloride, silicon, sulfides, sulfur, sulfur Chromium Nitrate 845 dioxide, sulfur/friction, sulfuric acid, tungsten, hydrogen trisulfide | [Chemical Properties]
Chromium nitrate is a crystalline substance, variously stated to be green brown or purple and existing in various hydrated forms. | [Chemical Properties]
deep blue or violet crystals | [Waste Disposal]
Precipitate chromium as the hydroxide. Dewater the sludge and dispose of in singlepurpose dumps. | [Uses]
Chromium nitrate is used in the manufacture of alkali metal-free catalysts and in preservation. It is used in the preparation of chrome catalysts, in textile printing operations, and as a corrosion inhibitor. Chromium(III) nitrate as a source of chromium is added to food supplements for nutritional purposes . | [General Description]
| [Purification Methods]
The pure deep violet nonahydrate salt is best prepared freshly from pure recrystallised (3 times) chromium (VI) trioxide and pure nitric acid. A solution is prepared by dissolving 1g of CrO3 in 3mL of H2O and 2mL of pure HNO3, and carefully, with stirring (behind a screen) pure MeOH (0.5-1.0mL) is added dropwise carefully (shield) with cooling to avoid a violent reaction. A bluish colour develops as Cr(VI) is reduced to Cr(III). When this solution is diluted to 130,000ppm of the salt, analysis detected by ICP/MS gave the following trace elements (ppm in brackets): Sr (33), Na (3.5), Mo, Ni, Cu, Si and Mg (0.13 each), Se, Zn, Al (0.026 each), Ti (1.5), Fe (4.9), Co (0.07), Sn (0.065), Ba (0.013 and W (0.078). Evaporation of the methanolic solution in high vacuum over CaCl2 eventually yields pure deep violet rhombic crystals of chromium (III) nitrate nonahydrate. An aqueous solution of this salt becomes green on heating but reverts to the violet colour on cooling. |
|
|