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Ferric oxide CAS# 1309-37-1

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Chemical Name：Ferric oxide

CAS No.:1309-37-1

Molecular Formula:Fe2O3

Molecular weight:159.69

Sample: Available

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Product Details

Products Description of Direct Ferric oxide CAS# 1309-37-1

Iron oxides are produced synthetically and consist essentially of anhydrous and/or hydrated iron oxides. The range of hues includesyellows, reds, browns and blacks. Food quality iron oxides are primarily distinguished from technical grades by the comparatively low levels of contamination by other metals. This is achieved by the selection and control of the source of iron and/or by the extent of chemical purification during the manufacturing process. Iron oxides have been used to color confectionery, fillings and decorations for pastry products, cheese products, fish paste, pet foods, cosmetics and pharmaceutical products.

Ferric oxide CAS# 1309-37-1

Melting point	1538°C
density	5.24
Fp	>230 °F
storage temp.	2-8°C
solubility	It is soluble In Warm Hydrochloric Acid, Slightly Soluble in Sulfuric Acid.
form	pieces
color	black
Specific Gravity	5.1～5.2
PH	3.7±0.3
Water Solubility	INSOLUBLE
Crystal Structure	Corundum type
crystal system	Three sides
Merck	14,4028
Space group	R3c
Lattice constant	a/nmb/nmc/nmα/oβ/oγ/oV/nm30.502590.502591.373590901200.3005
Exposure limits	ACGIH: TWA 5 mg/m3 OSHA: TWA 10 mg/m3; TWA 15 mg/m3; TWA 5 mg/m3 NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3
Stability:	Stable.
CAS DataBase Reference	1309-37-1(CAS DataBase Reference)
IARC	3 (Vol. 1, Sup 7) 1987
NIST Chemistry Reference	Iron(iii) oxide(1309-37-1)
EPA Substance Registry System	Ferric oxide (1309-37-1)

Product Application of Direct Ferric oxide CAS# 1309-37-1

Red iron oxide (Fe2O3) is an inorganic pigment of either natural or synthetic origin. It is a low chroma red with excellent durability and low cost. Synthetic pigment is made by heating iron sulfate with quicklime in a furnace. The second preparatory technique involves calcining iron sulfate in the presence of air at high temperatures. Natural and oxides of iron are mined either as the mineral hematite (Fe2O3) or as hematite in its hydrated form.

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