Description

2-Methyl-4-nitroaniline (CAS No. 99-52-5) is a high-purity nitroaromatic compound with the molecular formula C₇H₈N₂O₂, widely utilized in organic synthesis and industrial applications. This yellow to orange crystalline powder is characterized by its IUPAC name 2-methyl-4-nitroaniline and is known for its stability and reactivity as an intermediate in dye and pigment manufacturing. With a molecular weight of 152.15 g/mol, it is soluble in organic solvents such as ethanol and acetone but exhibits limited solubility in water. Our product is rigorously tested for purity (typically ≥98%) and is supplied with detailed analytical certificates (COA) to ensure consistency for research and industrial use. Proper storage in a cool, dry, and well-ventilated area is recommended to maintain its integrity.

Properties

• CAS Number: 99-52-5
• Complexity: 155
• IUPAC Name: 2-methyl-4-nitro-aniline
• InChI: InChI=1S/C7H8N2O2/c1-5-4-6(9(10)11)2-3-7(5)8/h2-4H,8H2,1H3
• InChI Key: XTTIQGSLJBWVIV-UHFFFAOYSA-N
• Exact Mass: 152.058577502
• Molecular Formula: C7H8N2O2
• Molecular Weight: 152.15
• SMILES: CC1=C(C=CC(=C1)[N+](=O)[O-])N
• Topological: 71.8
• Monoisotopic Mass: 152.058577502
• Physical Description: 2-methyl-4-nitroaniline appears as yellow needles or mustard yellow powder.
• Melting Point: 268 to 271 °F
• Solubility: less than 1 mg/mL at 72 °F
• Density: 1.1586 at 284 °F – Denser than water; will sink
• Synonyms: 2-Methyl-4-nitroaniline, 99-52-5, 2-Amino-5-nitrotoluene, 4-Nitro-o-toluidine, Benzenamine, 2-methyl-4-nitro-, 2-Methyl-4-nitrobenzenamine, 2-Methyl-4-nitrophenylamine, 4-NITRO-2-TOLUIDINE, 4-Nitro-o-toludine, CCRIS 2877, 2-Methyl-p-nitroaniline, FFY36EWC4R, NSC 2075, EINECS 202-762-1, 3-Methyl-4-aminonitrobenzene, BRN 0775772, Azoic diazo component 34, base, DTXSID3025629, AI3-16312, 2-Amino-1-methyl-5-nitrobenzene, NSC-2075, NSC-5508, CI 37100, DTXCID905629, 4-12-00-01809 (Beilstein Handbook Reference), METHYL-4-NITROANILINE, 2-, MNA (OPTICAL CRYSTAL), NAPHTHOLEAN RED RL BASE, BENZENAMINE, 2-METHYL-4-NITRO, inchi=1/c7h8n2o2/c1-5-4-6(9(10)11)2-3-7(5)8/h2-4h,8h2,1h, xttiqgsljbwviv-uhfffaoysa-n, 5-Nitro-2-aminotoluene, p-Nitro-o-toluidine, 1-Amino-2-methyl-4-nitrobenzene, Fast Red RL Base, Diabase Red RL, Ansibases Red RL, Devol Red RL, Red Base Ciba X, Red Base Irga X, Devol Red Salt E, Red Base NRL, Red RL Base, Spectrolene Red RL, Fast Red Salt RL, Kako Red RL Base, o-Toluidine, 4-nitro-, 4-Nitro-2-methylaniline, 4-Nitro-6-methylaniline, Daito Red Base RL, Diazo Fast Red RL, Fast Red 5NT, Sanyo Fast Red RL Base, Kayaku Red RL Base, Mitsui Red RL Base, Yamada Fast Red RL Base, Azogene Fast Red RL, Fast Red 5NT Salt, Symulon Red RL Base, Tulabase Fast Red RL, Naphtoelan Red RL Base, Sanyo Fast Red Salt RL, Fast Red Base RL, Azoene Fast Red GL Base, Meisei Fast Red RL Base, Hiltonil Fast Red RL Base, Hiltosal Fast Red RL Salt, Azogene Fast Red NRL Salt, Aniline, 2-methyl-4-nitro-, Meisi fast red rl base, Naphthoelan red rl base, C.I. 37100, 2-methyl-4-nitro-aniline, MFCD00007734, 2-METHYL-4-NITRO-PHENYLAMINE, 2-methyl4-nitroaniline, UNII-FFY36EWC4R, 2-methyl-4-nitro aniline, SCHEMBL85646, MLS002152873, 4-amino-3-methyl-nitrobenzene, SCHEMBL4054277, CHEMBL1319213, SCHEMBL10870928, SCHEMBL14171389, 2-Methyl-4-nitroaniline, 97%, NSC2075, NSC5508, HMS3001O21, BCP24793, Tox21_200387, BBL027656, SBB058776, STK301541, AKOS000118856, PS-6003, CAS-99-52-5, NCGC00091298-01, NCGC00091298-02, NCGC00257941-01, SMR000343276, N0116, N0529, NS00020904, ST45061222, 2-Methyl-4-nitroaniline masculineiE<>uRL, EN300-17404, A19646, D91727, AE-641/01960001, Q63395972, Z56926519, F2190-0477, 2-Methyl-4-nitroaniline;4-Nitro-o-toluidine;4-Nitro-o-toluidine;, 2-Amino-5-nitrotoluene ; 4-Nitro-o-toluidine; Azoic Diazo No. 34; C.I. 37100

Application

2-Methyl-4-nitroaniline serves as a key intermediate in the synthesis of azo dyes and pigments, particularly for textiles and inks. It is also employed in agrochemical research for developing nitroaromatic-based herbicides and fungicides. Additionally, this compound finds use in organic chemistry as a building block for more complex nitro- and amino-functionalized aromatic systems.

Safety and Hazards

GHS Hazard Statements

• H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]
• H412: Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P273, and P501

Hazard Classes and Categories

• Acute Tox. 3 (100%)
• Acute Tox. 3 (100%)
• Acute Tox. 3 (100%)
• STOT RE 2 (95.7%)
• Aquatic Chronic 2 (97.9%)

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