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Original site: www.cdc.gov/niosh-rtecs/VV8B9E30.html | RestoredCDC.org is an independent project, not affiliated with CDC or any federal entity. Visit CDC.gov for free official information. Due to archival on January 6, 2025, recent outbreak data is unavailable. Videos are not restored. Access data.restoredcdc.org for restored data. Use of this site implies acceptance of this disclaimer.[More]About Us Report Bug Compare ContentSkip directly to page optionsThe National Institute for Occupational Safety and Health (NIOSH)Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting PeopleSearchSearch Menu Navigation Menu× NIOSHNIOSH All CDCSubmit* Licensing Agreement Signed for RTECS* How Do I Access the RTECS Database?* Features of the RTECS Database* The National Institute for Occupational Safety and Health (NIOSH) HomeThe National Institute for Occupational Safety and Health (NIOSH)1. Registry of Toxic Effects of Chemical Substances (RTECS)Silicic acid, calcium saltRelated PagesRTECS #VV9150000CAS #1344-95-2; 59787-14-3See: NMAM or OSHA MethodsUpdatedSeptember 2013Molecular WeightN/RMolecular FormulaN/RSynonymsCalcium hydrosilicateCalcium monosilicateCalcium polysilicateCalcium silicate (OSHA)Calcium silicate (synthetic)Calcium silicate, synthetic nonfibrous (ACGIH)Calflo ECalsilCS lafargeFlorite RMarimet 45Microcal 160Microcal ETMicro-celMicro-cel AMicro-cel BMicro-cel CMicro-cel EMicro-cel TMicro-cel T26Micro-cel T38Micro-cel T41Promaxon P60Silene EFSilmos TSolexStabinex NW 7PSStarlex LSW 400Toyofine AReviewsOrganization Standard ReferenceAmerican Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value-time-weighted average 10 mg/m3 DTLVS* TLV/BEI,2013American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value-Not classifiable as a human carcinogen DTLVS* TLV/BEI,2013TOXICOLOGY REVIEW IJTOFN 22,37,2003Standards and RegulationsOrganization Standard ReferenceOccupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLVOccupational Exposure Limit-BELGIUM time-weighted average 10 mg/m3, MAR2002Occupational Exposure Limit-KOREA time-weighted average 10 mg/m3, 2006Occupational Exposure Limit-MEXICO time-weighted average 10 mg/m3 (inhalable), 2004Occupational Exposure Limit-NEW ZEALAND time-weighted average 10 mg/m3 (inspirable dust), JAN2002Occupational Exposure Limit-PERU time-weighted average 10 mg/m3, JUL2005Occupational Exposure Limit-SWITZERLAND MAK-week 3 mg/m3, resp, JAN2011Occupational Exposure Limit-UNITED KINGDOM time-weighted average 10 mg/m3 (inhal. dust), OCT2007Occupational Exposure Limit-UNITED KINGDOM time-weighted average 4 mg/m3 (resp. dust), OCT2007Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) 8H time-weighted average 15 mg/m3, total dust CFRGBR 29,1926.55,1994Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) 8H time-weighted average 5 mg/m3, respirable fraction CFRGBR 29,1926.55,1994Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) 8H time-weighted average 15 mg/m3, total dust CFRGBR 29,1910.1000,1994Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) 8H time-weighted average 5 mg/m3, respirable fraction CFRGBR 29,1910.1000,1994Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) 8H time-weighted average 15 mg/m3, total dust CFRGBR 29,1915.1000,1993Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) 8H time-weighted average 5 mg/m3, respirable fraction CFRGBR 29,1915.1000,1993NIOSH Documentation and SurveillanceOrganization Standard ReferenceNational Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CALCIUM SILICATE, respirable fraction-air time-weighted average 5 mg/m3 NIOSH* DHHS #95-121,1995National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CALCIUM SILICATE, total dust-air 10H time-weighted average 10 mg/m3 NIOSH* DHHS #95-121,1995National Occupational Exposure Survey 1983 Hazard Code X1322; Number of Industries 83; Total Number of Facilities 6757; Number of Occupations 65; Total Number of Employees Exposed 103864; Total Number of Female Employees Exposed 16592Status in Federal AgenciesOrganization ReferenceEPA TSCA Section 8(b) CHEMICAL INVENTORYPage last reviewed: November 16, 2018Content source: National Institute for Occupational Safety and Health* SyndicateRegistry of Toxic Effects of Chemical Substances (RTECS)* Licensing Agreement Signed for RTECS* How Do I Access the RTECS Database?* Features of the RTECS DatabaseFollow NIOSH* YouTubeNIOSH Homepage* Workplace Safety & Health Topics* Publications and Products* Programs* Contact NIOSH* About CDC* Contact Us* 800-232-4636Facebook Twitter Instagram LinkedIn Youtube Pinterest SnapchatFacebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat RSS* CONTACT CDCContact UsCall 800-232-4636Email Us* ABOUT CDC+ About CDC+ Jobs+ Funding* POLICIES+ Accessibility+ External Links+ Privacy+ Policies+ Web Policies+ No Fear Act+ FOIA+ OIG+ No Fear Act+ Nondiscrimination+ Vulnerability Disclosure Policy+ CDC Archive+ Public Health Publications+ HHS.gov+ USA.gov* CONNECT WITH US+ Youtube+ Snapchat* LANGUAGES+ Español+ 繁體中文+ Tiếng Việt+ 한국어+ Tagalog+ Русский+ العربية+ Kreyòl Ayisyen+ Français+ Polski+ Português+ Italiano+ Deutsch+ 日本語+ فارسی+ English* U.S. Department of Health & Human Services* Accessibility* External Links* Privacy* Policies* Web Policies* FOIA* OIG* No Fear Act* FOIA* Nondiscrimination* OIG* Vulnerability Disclosure Policy* CDC Archive* Public Health Publications* HHS.gov* USA.govContent Credential×This image was edited or created using GenAI (generative artificial intelligence).Our experts review all images in an effort to ensure accuracy and quality before use.Learn more about CDC's usage of GenAI.Exit Notification/Disclaimer PolicyCloseLinks with this icon indicate that you are leaving the CDC website.* The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.* Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.* You will be subject to the destination website's privacy policy when you follow the link.* CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.For more information on CDC's web notification policies, see Website Disclaimers.Cancel Continue
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