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Atomfair m-Tolyl isocyanate C8H7NO CAS 621-29-4

m-Tolyl isocyanate (CAS No. 621-29-4) is a high-purity aromatic isocyanate with the molecular formula C8H7NO and IUPAC name 1-isocyanato-3-methylbenzene . This versatile organic compound is widely used in chemical synthesis, particularly in the production of polyurethanes, coatings, adhesives, and specialty polymers. Our m-Tolyl isocyanate is rigorously tested for purity and consistency, making it an ideal choice for researchers and industrial applications requiring precise reactivity and performance. It is supplied in sealed containers under inert gas to ensure stability and prevent moisture contamination. Handle with care in a well-ventilated environment, as it is a reactive compound with potential sensitizing properties.

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Description

m-Tolyl isocyanate (CAS No. 621-29-4) is a high-purity aromatic isocyanate with the molecular formula C8H7NO and IUPAC name 1-isocyanato-3-methylbenzene. This versatile organic compound is widely used in chemical synthesis, particularly in the production of polyurethanes, coatings, adhesives, and specialty polymers. Our m-Tolyl isocyanate is rigorously tested for purity and consistency, making it an ideal choice for researchers and industrial applications requiring precise reactivity and performance. It is supplied in sealed containers under inert gas to ensure stability and prevent moisture contamination. Handle with care in a well-ventilated environment, as it is a reactive compound with potential sensitizing properties.

Properties

  • CAS Number: 621-29-4
  • Complexity: 149
  • IUPAC Name: 1-isocyanato-3-methyl-benzene
  • InChI: InChI=1S/C8H7NO/c1-7-3-2-4-8(5-7)9-6-10/h2-5H,1H3
  • InChI Key: CPPGZWWUPFWALU-UHFFFAOYSA-N
  • Exact Mass: 133.052763847
  • Molecular Formula: C8H7NO
  • Molecular Weight: 133.15
  • SMILES: CC1=CC(=CC=C1)N=C=O
  • Topological: 29.4
  • Monoisotopic Mass: 133.052763847
  • Synonyms: m-Tolyl isocyanate, 621-29-4, 1-Isocyanato-3-methylbenzene, Benzene, 1-isocyanato-3-methyl-, 3-Methylphenyl isocyanate, m-Isocyanatotoluene, 3-Tolyl isocyanate, m-Methylphenyl isocyanate, QR6QV3EC23, EINECS 210-676-0, AI3-28254, DTXSID9060732, EC 210-676-0, DTXCID9043227, 210-676-0, Meta-Tolyl Isocyanate, m-Tolylisocyanate, MFCD00002021, Isocyanic Acid m-Tolyl Ester, 3-methylbenzenisocyanate, 1-isocyanato-3-methyl-benzene, 3-methylphenylisocyanate, 3-tolylisocyanate, m-toluyl isocyanate, 3-methylphenyl-isocyanate, 5-methylphenyl isocyanate, 3-methyl phenyl isocyanate, m-Tolyl isocyanate, 99%, UNII-QR6QV3EC23, SCHEMBL59246, Isocyanic acid, m-tolyl ester, 1-isocya-nato-3-methylbenzene, 1-isocyanato-3-methyl benzene, 1-isocyanato-3-methylben-zene, SCHEMBL3588968, 1-Isocyanato-3-methylbenzene #, SCHEMBL10957658, SCHEMBL27531995, SCHEMBL28756119, CPPGZWWUPFWALU-UHFFFAOYSA-, ALBB-020889, SBB064239, STL299673, AKOS000120748, AS-13514, DB-032162, A8593, NS00020856, ST51041179, T0721, EN300-20949, E78228, InChI=1/C8H7NO/c1-7-3-2-4-8(5-7)9-6-10/h2-5H,1H3

Application

m-Tolyl isocyanate is primarily used as a key intermediate in the synthesis of polyurethane elastomers, coatings, and adhesives. It is also employed in the production of pharmaceuticals, agrochemicals, and specialty chemicals due to its reactive isocyanate group. Researchers utilize it in crosslinking reactions and as a building block for heterocyclic compounds. Its compatibility with various substrates makes it valuable in material science applications.

Safety and Hazards

GHS Hazard Statements

  • H314 (40.5%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
  • H315 (59.5%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H317 (90.5%): May cause an allergic skin reaction [Warning Sensitization, Skin]
  • H318 (39.2%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
  • H319 (59.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H330 (97.3%): Fatal if inhaled [Danger Acute toxicity, inhalation]
  • H334 (63.5%): May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
  • H335 (98.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
  • H400 (36.5%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
  • H410 (36.5%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

  • P233, P260, P261, P264, P264+P265, P271, P272, P273, P280, P284, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P319, P320, P321, P332+P317, P333+P317, P337+P317, P342+P316, P362+P364, P363, P391, P403, P403+P233, P405, and P501

Hazard Classes and Categories

  • Skin Corr. 1C (40.5%)
  • Skin Irrit. 2 (59.5%)
  • Skin Sens. 1 (90.5%)
  • Eye Dam. 1 (39.2%)
  • Eye Irrit. 2A (59.5%)
  • Acute Tox. 1 (97.3%)
  • Resp. Sens. 1 (63.5%)
  • STOT SE 3 (98.6%)
  • Aquatic Acute 1 (36.5%)
  • Aquatic Chronic 1 (36.5%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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