Disperse Orange 3

Also known as: 4-(4-nitrophenylazo)aniline, 4-[(4-nitrophenyl)diazenyl]aniline, C.I. 11005, CI 11005, Celliton Orange GR, Acetoquinone Light Orange JRL, abcolorange2rnex, Benzenamine, 4-[(4-nitrophenyl)azo]-, Benzenamine, 4-[2-(4-nitrophenyl)diazenyl]-, EINECS 211-984-8, MFCD00007856

Disperse Orange 3 (CAS 730-40-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H10N4O2 and a molecular weight of 242.23300 g/mol. Key properties include a melting point of ~200 °C (dec.)(lit.), a boiling point of 460.2ºC at 760 mmHg and a density of 1.34 g/cm3. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 730-40-5
Jingsj CID: J-1991776-1
Molecular Formula: C₁₂H₁₀N₄O₂
Molecular Weight: 242.23300 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	~200 °C (dec.)(lit.)
Boiling Point	460.2ºC at 760 mmHg
Density	1.34 g/cm3
Exact Mass	242.08000
PSA	96.56000
LogP	4.69680
Refractive Index	1.658

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H317 — May cause an allergic skin reaction
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Disperse Orange 3?

The CAS number of Disperse Orange 3 is 730-40-5.

What are the molecular formula and molecular weight of Disperse Orange 3?

Disperse Orange 3 has molecular formula C12H10N4O2 and molecular weight 242.23300 g/mol.

Is Disperse Orange 3 hazardous?

Disperse Orange 3 has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.

What are the upstream and downstream products of Disperse Orange 3?

For Disperse Orange 3, Upstream Products: 1,4-Dinitrobenzene, 4-Nitrodiazoaminobenzene, Aniline hydrochloride; Downstream Products: 4,4'-diaminoazobenzene, p-Phenylenediamine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Disperse Orange 3 (CAS 730-40-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991776-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.