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2-Methyl-5-nitroaniline

Also known as: 2-Amino-4-nitrotoluene, 5-Nitro-o-toluidine, 1-Amino-2-methyl-5-nitrobenzene, 2-Methyl-5-nitrobenzenamine, Scarlet G Base, Fast Scarlet G Base, CI 37105, Benzenamine, 2-methyl-5-nitro-

2-Methyl-5-nitroaniline (CAS 99-55-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C7H8N2O2 and a molecular weight of 152.151 g/mol. Key properties include a melting point of 103-106 °C(lit.), a boiling point of 329.4±22.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 153.0±22.3 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
99-55-8
Jingsj CID
J-1088805-8
Molecular Formula
C7H8N2O2
Molecular Weight
152.151 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point103-106 °C(lit.)
Boiling Point329.4±22.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point153.0±22.3 °C
Exact Mass152.058578
PSA71.84000
LogP1.83
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.616
Additional Property<0.1 g/100 mL at 19 ºC

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger
  • H301 — Toxic if swallowed
  • H311 — Toxic in contact with skin
  • H331 — Toxic if inhaled
  • H351 — Suspected of causing cancer
  • H412 — Harmful to aquatic life with long lasting effects

Customs & Trade Information

HS Code2921430090
SummaryHS:2921430090 toluidines and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Methyl-5-nitroaniline?

The CAS number of 2-Methyl-5-nitroaniline is 99-55-8.

What are the molecular formula and molecular weight of 2-Methyl-5-nitroaniline?

2-Methyl-5-nitroaniline has molecular formula C7H8N2O2 and molecular weight 152.151 g/mol.

Is 2-Methyl-5-nitroaniline hazardous?

2-Methyl-5-nitroaniline has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.

What are the upstream and downstream products of 2-Methyl-5-nitroaniline?

For 2-Methyl-5-nitroaniline, Upstream Products: 2-Bromo-4-nitrotoluene, o-Toluidine, Methanol; Downstream Products: 2-Chloro-N-(2-methyl-5-nitrophenyl)acetamide, 2-Methyl-5-nitrophenol, 6-Nitro-1H-indazole.

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

Last updated:

How to cite: Jingsj. "2-Methyl-5-nitroaniline (CAS 99-55-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1088805-8 (accessed 2026-11-09).

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