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2-Methylquinoline

CAS Number
91-63-4
EC Number
202-085-1
Chemical Formula
C10H9N
Molecular Weight
143.18 g/mol

Description

2-Methylquinoline (CAS 91-63-4 ), commercially recognized as Quinaldine, is a nitrogen-containing heterocyclic compound used across pharmaceutical synthesis, dye manufacturing, and specialty chemical production. It functions primarily as a building block and intermediate, enabling the construction of more complex active molecules and functional materials. In pharmaceutical manufacturing, it serves as a key synthetic intermediate. This includes the production of antimalarial compounds, including quinine derivatives, and other bioactive heterocyclic APIs. Polymer and plastics producers use it as a stabilizer and antioxidant precursor. It is particularly useful in formulations requiring protection against thermal degradation. In dye and pigment chemistry, it contributes to the synthesis of quinoline yellow and related colorants. These colorants are used in food-contact and industrial coating applications. Flavor and fragrance formulators incorporate it at controlled concentrations where its characteristic quinoline note is required. 2-Methylquinoline is supplied as a liquid at ambient conditions, typically offered in technical and high-purity grades suited to pharmaceutical intermediate and specialty chemical applications. Standard purity levels of 98% and above are commonly available for research and industrial procurement. Packaging ranges from small laboratory quantities through to drum volumes for global shipping. Contact us for supply of 2-Methylquinoline Request Quote

Other Names (Synonyms)

Quinaldine

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-1.5 °C
Boiling Point80-81 °C @ Press: 2 Torr
Density1.0600 g/cm³ @ Temp: 20 °C
Flash Point175 °F
Appearanceyellowish-brown liquid
ColorWhite to slightly yellow
FormCrystalline Powder
Water SolubilityPRACTICALLY INSOLUBLE
Vapor Pressure<0.1 hPa (20 °C)
Refractive Indexn 20/D 1.612(lit.)
pH6.9 (H2O, 20℃)(saturated aqueous solution)
Log P2.59

Safety & Handling

Warning
GHS07· IrritantGHS08· Health Hazard

Hazard Statements

H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H341Suspected of causing genetic defects
H412Harmful to aquatic life with long lasting effects H302+
H312Harmful if swallowed or in contact with skin

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29334990
Packing GroupIII
Storage Class10 - Combustible liquids
WGK (Germany)3