Iron Oxide

Description

Iron Oxide · CAS 1332-37-2 · FeO2. Color Additive Status: 73.1200; Color Additive Status: 73.200; Color Additive Status: 73.2250.

Identification

CAS Registry Number	1332-37-2
PubChem CID	123289
Molecular formula	FeO2
IUPAC name	dioxoiron

Computed Descriptors

Molecular Weight	87.84
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	87.924765
Monoisotopic Mass	87.924765
Topological Polar Surface Area	34.1
Heavy Atom Count	3
Formal Charge	0
Complexity	18.3

Physical & Chemical Properties

Color Additive Status	73.1200
Color Additive Status	73.200
Color Additive Status	73.2250
Color Additive Status	73.3125
Color Additive Status	175.300
Color Additive Status	175.380
Color Additive Status	175.390
Color Additive Status	177.1350
Color Additive Status	177.1460
Color Additive Status	177.2600

Physical description & handling notes

• Dry Powder; Large Crystals
• Information not available.
• Synthetic Iron Oxides / Iron Oxides
• Foods, Drugs, Cosmetics, Devices
• Sausage casings NTE 0.1 percent (by wt). Hard and soft candy, mints, and chewing gum. Dietary supplement tablets and capsules. For all human food uses, lead (as Pb) content NTE 5 mg/kg (5 ppm). Ingested or topically applied drugs ingested dosage by man NTE 5 mg/d (as Fe). Cosmetics generally including eye area use. Contact lenses.
• 3 - Petitioned for use after the 1960 amendments; never provisionally listed.

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Foods, Drugs, Cosmetics, Devices FDA Substance added to food: COLOR OR COLORING ADJUNCT, SURFACE-FINISHING AGENT FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CIR / INCI: Cosmetic colorant
GHS notification summary	99% (488 / 493)

GHS Hazard Classification

GHS notification summary	99% (488 / 493)

Documented Uses

• Information on 62 consumer products that contain Iron oxide in the following categories is provided:
• Agriculture, Forestry, Fishing and Hunting
• Paint and Coating Manufacturing

Synonyms

Iron dioxide; Iron oxide (Fe2O4); Iron oxide (FeO2); 12411-15-3; Iron oxide (ACGIH); RefChem:791356; DTXSID6049648; EINECS 215-570-8; 215-570-8; 1332-37-2; IRON OXIDE; dioxo-iron; SCHEMBL158658

Frequently Asked Questions

What are the CAS number and molecular formula of Iron Oxide?

CAS 1332-37-2; molecular formula FeO2; molecular weight — g/mol.

What other names is Iron Oxide known by?

Iron dioxide, Iron oxide (Fe2O4), Iron oxide (FeO2), 12411-15-3, Iron oxide (ACGIH), RefChem:791356.

What is the regulatory status of Iron Oxide?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Foods, Drugs, Cosmetics, Devices; FDA Substance added to food: COLOR OR COLORING ADJUNCT, SURFACE-FINISHING AGENT; FDA Cumulative Estimated Daily Intake (CEDI): FCS.

Is Iron Oxide classified as hazardous?

99% of GHS notifications report no hazard classification (488 of 493).

What are the key physical properties of Iron Oxide?

Color Additive Status: 73.1200; Color Additive Status: 73.200; Color Additive Status: 73.2250; Color Additive Status: 73.3125.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.