S-LAL21

SECTION 2: Hazards identification

GHS Classification Optical glasses are physically and chemically stable and are not hazardous. However, the following danger hazardousness is concerned during processing of optical glasses. ： Ingestion of grinding and polishing liquids and inhalation of dust generated during dry processing may cause chronic or cumulative health impairment including cancer.

Environmental effects

Pay attention to the concentrations of grinding and polishing liquids in wastewater as they may damage the ecosystem.

2.1 Classification of the substance or mixture

115) Al2O3 B2O3 Sb2O3 SiO2 Y2O3 Explosives Not applicable Flammable / Flammable gases Not applicable Flammable / Flammable aerosols Not applicable Combustion support / Oxidizing gases Not applicable Gases under pressure Not applicable Flammable liquids Not applicable Flammable solids Not classified Not applicable Self-reactive substances and mixtures Not applicable Pyrophoric liquids Not applicable Physical Not applicable Pyrophoric solids Not classified Not applicable Self-heating substances and mixtures Not classified Not applicable Substances and mixtures which, in contact with water, emits flammable gases Not classified Not applicable Oxidizing liquids Not applicable Oxidizing solids Not classified Classification not possible Classification not possible Classification not possible Not applicable Organic peroxides Not applicable Corrosive to metals Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Acute toxicity(Oral) Not classified Category 5 Classification not possible Not applicable Acute toxicity(Skin) Classification not possible Classification not possible Classification not possible Classification not possible Not applicable Acute toxicity(Inhalation: Gas) Not applicable Acute toxicity(Inhalation: Vapour) Classification not possible Classification not possible Classification not possible Not applicable Classification not possible Acute toxicity(Inhalation: Dust) Classification not possible Classification not possible Classification not possible Classification not possible Not applicable Acute toxicity(Inhalation: Mist) Not applicable Classification not possible Not applicable Skin corrosion / Irritation Classification not possible Category 3 Classification not possible Classification not possible Not applicable Serious eye damage / Eye irritation Classification not possible Category 2A-2B Category 2B Classification not possible Classification not possible Respiratory sensitization Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Skin sensitization Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Germ cell mutagenicity Classification not possible Classification not possible Not classified Not applicable Carcinogenicity Not classified Classification not possible Category 1B Category 1A Health Not applicable Reproductive toxicity Classification not possible Classification not possible Category 1B Classification not possible Classification not possible Category 3 (Respiratory Category 1 (Heart) Category 1 (Respiratory Classification not possible tract irritation) system) Specific target organ Category 2 (Respiratory toxicity-Single exposure system) Specific target organ toxicity- Category 1 (Respiratory Category 1 (Inhale：Lung) Classification not possible system) system, Kidney) Repeated exposure Classification not possible

Aspiration hazard

Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Environmental Hazardous to the aquatic environment (Acute) Classification not possible Not classified Category 3 Classification not possible Classification not possible Hazardous to the aquatic environment (Chronic) Classification not possible Not classified Category 3 Classification not possible Classification not possible

Signal word

Danger Warning Danger -