1-Naphthyl Isothiocyanate

Alpha-naphthylisothiocyanate appears as odorless white needles or powder. Tasteless. (NTP, 1992)

White nearly odorless solid; [Merck Index] Slightly yellow odorless powder; [Acros Organics MSDS]

Danger

H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]

P233, P260, P261, P262, P264, P264+P265, P270, P271, P280, P284, P301+P316, P302+P352, P304+P340, P305+P351+P338, P316, P317, P319, P321, P330, P332+P317, P337+P317, P342+P316, P361+P364, P362+P364, P403, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 47 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Causes abnormal liver function tests, cholestatic jaundice, and hepatitis in acute oral studies of rats; [RTECS] A hepatotoxin; [Merck Index] Slowly hydrolyzed by water; [CAMEO] May cause liver and kidney injury; [NTP] May cause irritation; Harmful by ingestion; May cause liver injury; [Acros Organics MSDS] See Phenyl isothiocyanate.

Isocyanates and thioisocyanates, such as ALPHA-NAPHTHYLISOTHIOCYANATE, are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SMALL SPILLS AND LEAKAGE: If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

Drug-Induced Liver Injury Severity and Toxicity (DILIst)

1-naphthylisothiocyanate

DILI Positive

DOI:10.1016/j.drudis.2019.09.022

A tool for the study of liver damage which causes bile stasis and hyperbilirubinemia acutely and bile duct hyperplasia and biliary cirrhosis chronically, with changes in hepatocyte function. It may cause skin and kidney damage. [ChemIDplus] Has been used as an insecticide (with pyrethrum); [NTP]

Farming (Pesticides) [Category: Industry]