EINECS No.: 231-545-4 (for silica)
EEC Label (Risk/Safety Phrases): R 48/20, R 40/20, S22, S38 (for silica)
IARC: Silica dust, crystalline, in the form of quartz or cristobalite is classified in IARC Group 1. Silica,
amorphous is classified in IARC Group 3.
NTP: Respirable crystalline silica is classified as a known carcinogen.
IARC: Crystalline silica inhaled in the form of quartz or cristobalite dust is carcinogenic to humans (Group 1).