BSL7Y

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) Al2O3 As2O3 B2O3 PbO SiO2 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 Pyrophoric solids Not classified Not classified 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 Not classified Classification not possible Classification not possible Classification not possible 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 2 Category 5 Classification not possible Classification not possible Acute toxicity(Skin) Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Acute toxicity(Inhalation: Gas) Not applicable Acute toxicity(Inhalation: Vapour) Classification not possible Classification not possible Classification not possible Classification not possible Not applicable Acute toxicity(Inhalation: Dust) Classification not possible Classification not possible Classification not possible Classification not possible Classification not possible Acute toxicity(Inhalation: Mist) Not applicable Classification not possible Classification not possible Not applicable Skin corrosion / Irritation Classification not possible Classification not possible Category 3 Classification not possible Serious eye damage / Eye irritation Classification not possible Category 2A-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 Category 2 Classification not possible Category 2 Not classified Carcinogenicity Not classified Category 1A Classification not possible Category 2 Category 1A Reproductive toxicity Classification not possible Category 1A Classification not possible Category 1A Classification not possible Category 1 (Digestive Category 3 (Respiratory tract,Heart,Skeletal Category 3 (Respiratory Category 1 (Respiratory Health Classification not possible tract irritation) muscle,Respiratory tract irritation) system) Specific target organ system) toxicity-Single exposure Category 1 (Central nervous system,Peripheral Specific target organ toxicity- nervous system,Immune Category 2 (Blood Category 1 (Respiratory Category 1 (Inhale：Lung) system,Respiratory Classification not possible system,Nervous Repeated exposure system, Kidney) system,Kidneys) system,Liver,Kidneys,Skin, Blood vessel)

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

Signal word

Danger Warning Danger