S-BSL7

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. ： When dust inhales during dry processing and melting, may cause chronic or cumulative health impairment.　And gas inhales during melting, may cause acute poisoning and chronic or cumulative health impairment including cancer.

Environmental effects

Pay attention to the concentrations of discharge density of gas during melting as they may damage the ecosystem.

2.1 Classification of the substance or mixture

115) B2O3 BaO Sb2O3 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 Not applicable Flammable solids Not classified Self-reactive substances and mixtures Not applicable Pyrophoric liquids Not applicable Physical Pyrophoric solids Not classified Self-heating substances and mixtures Not classified Substances and mixtures which, in contact with water, emits flammable gases Not classified Oxidizing liquids Not applicable Oxidizing solids Classification not possible Organic peroxides Not applicable Corrosive to metals Classification not possible Acute toxicity(Oral) Category 5 Classification not possible Category 5 Acute toxicity(Skin) Classification not possible Acute toxicity(Inhalation: Gas) Not applicable Acute toxicity(Inhalation: Vapour) Classification not possible Acute toxicity(Inhalation: Dust) Classification not possible Acute toxicity(Inhalation: Mist) Classification not possible Not applicable Skin corrosion / Irritation Category 3 Classification not possible Serious eye damage / Eye irritation Category 2A-2B Category 2B Respiratory sensitization Classification not possible Skin sensitization Classification not possible Germ cell mutagenicity Classification not possible Not classified Carcinogenicity Classification not possible Health Category 1B Category 3 (Respiratory Category 1 (Heart, Reproductive toxicity Classification not possible Category 1B Category 1 (Heart) tract irritation) Digestive system, Muscle) Specific target organ toxicity-Single Category 2 (Nervous Category 2 (Respiratory exposure system) Category 3 (Respiratory tract irritation) Specific target organ toxicity-Repeated Category 1 (Respiratory exposure Classification not possible system) - 115) SiO2 TiO2 ZnO 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 Self-reactive substances and mixtures Not applicable Pyrophoric liquids Not applicable Physical Not applicable Pyrophoric solids Not classified Self-heating substances and mixtures Not classified Substances and mixtures which, in contact Not classified with water, emits flammable gases Oxidizing liquids Not applicable Oxidizing solids Classification not possible Not classified Classification not possible Organic peroxides Not applicable Corrosive to metals Classification not possible Acute toxicity(Oral) Classification not possible Not classified Acute toxicity(Skin) Classification not possible Not classified Classification not possible Acute toxicity(Inhalation: Gas) Not applicable Acute toxicity(Inhalation: Vapour) Not applicable Classification not possible Acute toxicity(Inhalation: Dust) Classification not possible Not classified Acute toxicity(Inhalation: Mist) Not applicable Skin corrosion / Irritation Classification not possible Not classified Serious eye damage / Eye irritation Classification not possible Category 2B Not classified Respiratory sensitization Classification not possible Germ cell mutagenicity Classification not possible Not classified Classification not possible Skin sensitization Classification not possible Not classified Carcinogenicity Category 1A Health Category 2 Not classified Category 1 (Respiratory Category 1 Reproductive toxicity Classification not possible Category 2 Classification not possible system) (Kidneys,Systemic toxicity) Specific target organ toxicity-Single exposure Specific target organ toxicity-Repeated Category 1 (Respiratory Classification not possible exposure system, Kidney)

Aspiration hazard

Classification not possible Environmental Hazardous to the aquatic environment (Acute) Not classified Classification not possible Category 3 Hazardous to the aquatic environment (Chronic) Not classified Classification not possible Category 3 Classification not possible Environmental Hazardous to the aquatic environment (Acute) Classification not possible Category 1 Hazardous to the aquatic environment (Chronic) Classification not possible Category 4 Category 1

Signal word

Warning Danger Danger Warning Danger