Name: Iron Oxide Red#1309-37-1
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Iron Oxide Red#1309-37-1

Iron Oxide Red#1309-37-1
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Chemical Name： Iron Oxide Red
CAS No.:1309-37-1
Molecular Formula：Fe2O3
Sample: Available
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Iron Oxide Red#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.

Ferric oxide Chemical Properties

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/m3OSHA: TWA 10 mg/m3; TWA 15 mg/m3; TWA 5 mg/m3NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3
Stability:	Stable.
CAS DataBase Reference	1309-37-1(CAS DataBase Reference)
NIST Chemistry Reference	Iron(iii) oxide(1309-37-1)
IARC	3 (Vol. 1, Sup 7) 1987
EPA Substance Registry System	Ferric oxide (1309-37-1)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26
OEB	B
OEL	TWA: 5 mg/m3
WGK Germany	-
RTECS	NO7400000
TSCA	Yes
HS Code	28211000
Hazardous Substances Data	1309-37-1(Hazardous Substances Data)
IDLA	2,500 mg Fe/m3

Product Usage

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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