Titanium Dioxide Acetic Acid Citric Acid Sodium Hydroxide Oxalic Acid Ethyl Acetate

All Categories

Encyclopedia |

Market Inquiry|

Supplier|

About Globalchemx

Iron Oxide Black

CAS No.: 12227-89-3

Formula: Fe3O4

Molecular Weight: 231.54

Suppliers: All(0) China Suppliers(0) Products(28)

Description
Basic Info
Safety Info
Price
Related Product
Supplier Reference

What is Iron Oxide Black

**Introduction to Iron Oxide Black** Iron Oxide Black (Fe₃O₄), also known as magnetite, is a high-performance black pigment widely used in coatings, plastics, ceramics, and construction materials. Known for its excellent tinting strength, UV resistance, and chemical stability, it provides durable coloration even in harsh environments. This inorganic pigment is non-toxic, eco-friendly, and offers superior heat resistance, making it ideal for industrial applications such as magnetic inks, toners, and anti-corrosion paints. Its natural magnetic properties also make it valuable in electronics and biomedical fields. Iron Oxide Black ensures long-lasting, fade-resistant color while meeting stringent safety and environmental standards, making it a preferred choice for sustainable and high-quality products.

Preparation Process: Iron Oxide Black (Fe₃O₄, magnetite) can be prepared via the **coprecipitation method**: 1. Dissolve **ferrous sulfate (FeSO₄·7H₂O)** and **ferric chloride (FeCl₃·6H₂O)** in deionized water at a **1:2 molar ratio** under nitrogen to prevent oxidation. 2. Heat the solution to **60–80°C** and add **sodium hydroxide (NaOH)** dropwise with vigorous stirring until pH **10–12** is reached, forming a black precipitate. 3. Maintain the reaction for **1–2 hours** to ensure complete crystallization. 4. Filter, wash with water and ethanol to remove impurities, then dry at **80–100°C** to obtain fine Fe₃O₄ powder. Alternatively, **thermal decomposition** of iron(III) oxalate or **hydrothermal synthesis** can also be used.

Usage Scenarios: Iron Oxide Black (Fe3O4), or magnetite, is widely used as a black pigment in paints, coatings, plastics, and ceramics due to its excellent tinting strength and UV resistance. In construction, it enhances concrete and asphalt durability while providing color consistency. It serves as a polishing agent in metallurgy and as a catalyst in chemical reactions. In electronics, it is used in magnetic recording media and ferrofluids. The biomedical field employs it in MRI contrast agents and drug delivery systems. Additionally, it is utilized in wastewater treatment for heavy metal adsorption and in cosmetics for safe, non-toxic pigmentation.

Iron Oxide Black Basic Info

Chemical Name Iron Oxide Black

Synonyms C.I. Pigment Black 11;c.i. 77499;kjasdiwals;IRON OXIDE BLACK;Fe3O4 nanoparticle;Iron Oxide Black Food grade;Iron Oxide Black pharma grade;Iron Oxide Black cosmetic grade

CAS No. 12227-89-3

Molecular Formula Fe3O4

Molecular Weight 231.54

PSA -

LogP -

Safely Info

RTECS -

Hazard Class -

Safety Statements -

HS Code -

WGK Germany -

Packing Group -

RIDADR -

Risk Statements -

Hazard Codes -

Caution Statement P261-P271-P304+P340-P312

Hazard Declaration H332

Symbol GHS07

Signal Word Warning

Iron Oxide Black Price

1. United States: $0.50 - $2.00 per kg
2. China: $0.30 - $1.50 per kg
3. Russia: $0.40 - $1.80 per kg
4. Germany: $0.60 - $2.20 per kg
5. India: $0.25 - $1.20 per kg
6. Japan: $0.70 - $2.50 per kg
7. Brazil: $0.50 - $1.80 per kg
8. South Korea: $0.60 - $2.00 per kg
9. Philippines: $0.40 - $1.50 per kg
10. United Kingdom: $0.70 - $2.30 per kg
11. France: $0.65 - $2.20 per kg
12. Mexico: $0.45 - $1.70 per kg
13. Canada: $0.55 - $2.10 per kg
14. South Africa: $0.35 - $1.60 per kg
15. Egypt: $0.30 - $1.40 per kg
16. Turkey: $0.40 - $1.70 per kg
17. Thailand: $0.35 - $1.50 per kg
18. Indonesia: $0.30 - $1.40 per kg

Note: Prices are approximate and can vary based on quality, quantity, and supplier.