| Identification | Back Directory | [Name]
CHROMIUM(III) PHOSPHATE | [CAS]
7789-04-0 | [Synonyms]
arnaudon’sgreen
CHROMIC PHOSPHATE
CHROMIUM PHOSPHATE
chromiummonophosphate
chromiumorthophosphate
Chromium(Ⅲ) Phosphate
CHROMIUM(III) PHOSPHATE
CHRONIUM(III) PHOSPHATE
Chromium(III) orthophosphate
phosphoricacidchromium(iii)salt
Chromium(Ⅲ) phosphate hexahydrate
Phosphoricacid,chromium(3+)salt(1:1)
phosphoricacid,chromium(3++)salt(1:1) | [EINECS(EC#)]
232-141-0 | [Molecular Formula]
CrO4P | [MDL Number]
MFCD00016049 | [MOL File]
7789-04-0.mol | [Molecular Weight]
146.97 |
| Chemical Properties | Back Directory | [Appearance]
dark coloured powder | [Melting point ]
120-140 °C (dec.)(lit.)
| [density ]
2.12 g/mL at 25 °C(lit.)
| [solubility ]
insoluble in H2O, acid solutions, aquaregia | [form ]
blue orthorhombic crystals | [color ]
blue orthorhombic crystals, crystalline | [Stability:]
Stability | [Water Solubility ]
insoluble H2O; soluble acids [MER06] | [Uses]
Paint pigment, catalyst. | [CAS DataBase Reference]
7789-04-0 | [EPA Substance Registry System]
Phosphoric acid, chromium(3+) salt (1:1) (7789-04-0) |
| Questions And Answer | Back Directory | [Preparation]
CHROMIUM(III) PHOSPHATE is produced by the reaction of phosphoric acid with chromic anhydride (CrO3). By adding reducing agents such as formaldehyde and hydrogen peroxide, CrO3 is reduced to Cr2O3, which then combines with phosphoric acid during heating to form amorphous P2O5-Cr2O3. This inorganic polymer backbone has high strength and elastic modulus, but its applications are relatively limited due to the toxicity of Cr6+. |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
34 | [Safety Statements ]
26-36/37/39-45 | [RIDADR ]
UN 1759 8/PG 1
| [WGK Germany ]
3
| [TSCA ]
TSCA listed | [Safety Profile]
When heated to
decomposition it emits toxic fumes of PO, |
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