English Safety Data Sheet Database 中文版 MSDS

1-Methylisoquinoline

CAS No. 1721-93-3 | PubChem CID 15592
Section 1. Identification
Chemical Name1-Methylisoquinoline CAS No.1721-93-3
Synonyms1-methyl isoquinoline Chinese Name1-甲基异喹啉
Molecular FormulaC10HgN Molecular Weight143.1852
UN No. Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word WARNING
Pictograms GHS07 · Irritant
Hazard Statements H315H319H335
Precautionary Statements P261P264P264+P265P271P280P302+P352P304+P340P305+P351+P338P319P321P332+P317P337+P317P362+P364P403+P233P405P501

Section 2. Hazards Identification

H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]

H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

H335 (97.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 45 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Section 9. Physical and Chemical Properties

Optical coefficient

Refractive index

Source: PubChem CID 15592 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:46:05.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.