Disperse Orange 3

Basic Information

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CAS Number

730-40-5

Molecular Formula

C12H10N4O2

Molecular Weight

242.23 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Melting Point

~200 °C (dec.)

Boiling Point

385.06°C (rough estimate)

Density

1.2532 (rough estimate)

Flash Point

460.2 °C at 760 mmHg

Refractive Index

1.6081 (estimate)

SMILES

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Nc1ccc(cc1)N=Nc1ccc(cc1)[N+](=O)[O-]

InChI

InChI=1S/C12H10N4O2/c13-9-1-3-10(4-2-9)14-15-11-5-7-12(8-6-11)16(17)18/h1-8H,13H2/b15-14+

InChIKey

UNBOSJFEZZJZLR-CCEZHUSRSA-N

LogP

4.69680

Complexity

300

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H317 May cause an allergic skin reaction
Sensitization, Skin

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

Disperse Orange 3
C.I. 11005
disperse orange 3 (C.I. 11005)
4-[(4-nitrophenyl)diazenyl]aniline
4-Amino-4'-nitroazobenzene
4-Nitro-4'-aminoazobenzene
4-[(4-Nitrophenyl)azo]benzenamine

MDL Number

MFCD00007856

FAQ

What are the physical and chemical properties of Disperse Orange 3 (CAS: 730-40-5)?

Disperse Orange 3 (CAS: 730-40-5) is a water-insoluble dye used in the textile and paper industries. It has a molecular weight of approximately 476.39 g/mol and exhibits excellent light and wash fastness. The dye is crystalline with a melting point of around 220-225°C. It is slightly soluble in water but highly soluble in organic solvents like ethanol and acetone. The dye is stable under neutral to slightly acidic conditions but can be affected by strong bases and oxidizing agents.

How is Disperse Orange 3 (CAS: 730-40-5) typically synthesized?

Disperse Orange 3 (CAS: 730-40-5) is synthesized through a multi-step process involving the coupling of aazo中间体和相应的偶氮染料前体。该合成通常使用邻苯二甲酸酯作为耦合剂，反应通常在酸性条件下进行，需要催化剂如硫酸。该过程中，反应的选择性较高，产率可达80%-85%。

What industries use Disperse Orange 3 (CAS: 730-40-5)?

Disperse Orange 3 (CAS: 730-40-5) is primarily used in the textile and paper industries for coloring fabrics and paper products. It is also employed in the plastics industry for coloring polyolefins and other polymers. Additionally, it finds applications in printing inks, paints, and coatings due to its excellent light and wash fastness properties.

What precautions should be taken when handling Disperse Orange 3 (CAS: 730-40-5)?

When handling Disperse Orange 3 (CAS: 730-40-5), it is important to wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. Work should be conducted in a well-ventilated area or a fume hood to minimize inhalation risks. Spills should be cleaned up using absorbent materials and disposed of according to local waste disposal regulations. Handling should be done with care to avoid skin contact. Always consult the Safety Data Sheet (SDS) for specific safety guidelines and emergency procedures.