Health hazards due to the inhalation of amorphous silica

LTEL (TWA): - ppm 3 mg/m3 Data for silica amorphous respirable ACGIH LTEL (8 hour TWA): - ppm 6 mg/m3 WEL data for silica amorphous inhalable dust EH40 (2005) LTEL (8 hour TWA): - ppm 2 4 mg/m3 WEL data for silica amorphous respirable dust EH40 (2005) 3LTEL (8 hour TWA): - ppm 4 mg/m Data for silica amorphous Silica amorphous 7631-86-9X -231-545-4X X XXKE-31032 U S Federal Regulations SARA 313 Not applicable SARA 311/312 Hazard CategoriesSee section 2 for more information CWA (Clean Water Act) Not applicable Clean Air Act Not applicable OSHA - Occupational Safety and Health

Material Safety Data Sheet

Chronic Health Effects: This product may contain impurities of Silicon Dioxide - crystalline quartz (0 1%) Inhalation of crystalline silica dust entails risk of pulmonary fibrosis (silicosis) Cases of lung fibrosis have been reported among workers exposed to amorphous silica in the ferrosilicon

Potential Health Effects Inhalation of free respirable silica may cause silicosis or other serious delayed lung injury Silica may be released by grinding or machining of coated materials Use NIOSH-approved dust/mist respirator when grinding or machining coated items Inhalation: May cause irritation to the respiratory tract Inhalation of dusts at levels above recommended exposure

01 06 2020Silica is commonly and abundantly found in much of the earth's rock and can become airborne when that rock is destroyed If there is a destruction or pulverization of rock such as grinding or cutting that results in dust the danger of silica inhalation may be present Many workers may be subject to silica exposure One of the most well known industries at risk for silica inhalation is

Health Hazards (Acute and Chronic): coated with an unremovable layer of amorphous silica and/or bentonite clay IARC (Vol 68 1997 pg 191-192) has stated that crystalline silica (quartz) can differ in toxicity depending on the minerals with which it is combined Citing studies in IARC (vol 42 1987 p 86) which stated that the toxic effect of crystalline silica (quartz) is reduced by

Health Hazards (Acute and Chronic): coated with an unremovable layer of amorphous silica and/or bentonite clay IARC (Vol 68 1997 pg 191-192) has stated that crystalline silica (quartz) can differ in toxicity depending on the minerals with which it is combined Citing studies in IARC (vol 42 1987 p 86) which stated that the toxic effect of crystalline silica (quartz) is reduced by

Health Hazards Due to the Inhalation of Amorphous Silica

Health Hazards Due to the Inhalation of Amorphous Silica R Merget 1 T H U Kpper S Philippou H D R Breitstadt Health Hazards Due to the Inhalation of Amorphous Silica R Merget et al Arch Toxicol 2002 Jan Show details Arch Toxicol Actions Search in PubMed Search in NLM Catalog Add to Search 2002 Jan 75(11-12):625-34 doi: 10 1007/s002040100266 Authors R

Amorphous silica (glass) 7631-86-9 13 Polydimethylsiloxane 63148-62-9 10 Methyltriacetoxysilane 4253-34-3 6 Titanium Dioxide 13463-67-7 5 Ethyltriacetoxysilane 17689-77-9 6 * Unlisted ingredients are not considered hazardous under the OSHA GHS Hazard Communication Standard (29 CFR 1910 1200) (Methyltriacetoxysilane) Observe limits for acetic acid formed during curing on exposure

STOT (Inhalation-Respiratory Irritation) Category 3 WARNING STOT (Inhalation) RE Category 2 Target Organ Effects: Skin eyes inhalation GHS label elements including precautionary statements III Composition Chemical Name Weight-% C A S number Odorless Mineral Spirits 7 0-13 64742-48-9 Amorphous Silica's 5 0-10 0 68855-54-9

Health Hazards (Acute and Chronic): coated with an unremovable layer of amorphous silica and/or bentonite clay IARC (Vol 68 1997 pg 191-192) has stated that crystalline silica (quartz) can differ in toxicity depending on the minerals with which it is combined Citing studies in IARC (vol 42 1987 p 86) which stated that the toxic effect of crystalline silica (quartz) is reduced by

Amorphous silica (glass) 7631-86-9 13 Polydimethylsiloxane 63148-62-9 10 Methyltriacetoxysilane 4253-34-3 6 Titanium Dioxide 13463-67-7 5 Ethyltriacetoxysilane 17689-77-9 6 * Unlisted ingredients are not considered hazardous under the OSHA GHS Hazard Communication Standard (29 CFR 1910 1200) (Methyltriacetoxysilane) Observe limits for acetic acid formed during curing on exposure

Inhalation Synthetic amorphous pyrogenic silica 112945-52-5 5000 mg/kg OECD 401 2000 mg/kg OECD 402 No data ACUTE TOXICITY: No specific toxicity data exists for this mixture Classification is based on acute toxicity estimation methods using ingredient data Oral: Not classified Does not meet acute oral toxicity criteria Dermal: Not classified Does not meet acute dermal

Inhalation: May cause irritation mucous membranes and upper respiratory tract Excessive or prolonged inhalation may cause lung damage pneumoconiosis silicosis cyanosis coughing or difficult breathing Ingestion: Except for ingestion of large amounts unlikely to cause significant harm Acute: May be harmful by inhalation May irritate

Inhalation: May cause dryness ad irritation to mucous membranes and respiratory tract in case of severe exposure Ingestion: May be harmful if swallowed in large amounts However no adverse effects are expected for numeral industrial handling Silica gel is a synthetic amorphous silica not to be confused with crystalline silica such as quartz cristobalite or tridymite or with diatomaceous

SAFETY DATA SHEET

(Silica amorphous Titanium Dioxide) Inhalation of particulates unlikely due to product's physical state First Aid Measures General advice Provide this SDS to medical personnel for treatment Inhalation If symptoms are experienced remove source of contamination or move victim to fresh air If irritation persists obtain medical advice Eye Contact Immediately flush the contaminated eye(s

Silica amorphous fused Silica slurry Tridymite dust W 12 (Filler) MIN-U-sil alpha quartz Quso G 30 Dri-Die insecticide 67 Nalco 1050 Silica amorphous fumed Pyrogenic colloidal silica Synthetic amorphous silica UNII-ETJ7Z6XBU4 Hydrophobic silica 2482 Calcined diatomaceous earth Crystallized silicon dioxide 14464-46-1 91053-39-3

Synonyms: Silicon Dioxide Synthetic Amorphous Silica Pyrogenic (Fumed) Amorphous Silica Chemical name Synthetic Amorphous Pyrogenic Silica CAS No 112945-52-5 weight-% 99 9 Regulatory information is found under the general silica: CAS RN 7631-86-9 EINECS RN 231-545-4 Other Information: The hyphen (-) means not applicable 4 FIRST AID

US NIOSH: Pocket Guide to Chemical Hazards Components Type Value Amorphous silica (CAS TWA 6 mg/m3 7631-86-9) Carbon black (CAS TWA 0 1 mg/m3 1333-86-4) Biological limit values No biological exposure limits noted for the ingredient(s) Exposure guidelines USA OSHA (TWA/PEL): 15 mg/m3 (Total Dust) 5 mg/m3 (Respirable Fraction) ACGIH (TWA/TLV): 10 mg/m3 (Inhalable Particulate) 3 mg/m3

Dear friends A resume of a scientific work about the Health hazards due to the inhalation of amorphous silica I do not want to cause alarm but just open the discussion kind regards Pedro Arch Toxicol 2002 Jan 75(11-12):625-34 Health hazards due to the inhalation of amorphous silica Merget R T Kpper HU Philippou S HD Breitstadt R Bruening T Source Research Institute

Not normally a hazard due to the physical form of product The material is a physical irritant to the gastrointestinal tract EYE! There is some evidence to suggest that this material can causeeye irritation and damage in some persons SKIN! The material is not thought to produce adverse health effects or skin irritation following contact (as classified using animal models) Nevertheless good

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