Occupational Safety and Health Administration, National Institute for Occupational Safety and Health, "Chemical, mineralogical and structural features of native and expanded perlite from Macedonia", "Perlite toxicology and epidemiology – a review", "General Information - Mining Resources - www.minenergy.am", "USGS Mineral Commodity Summaries - PERLITE", Emulsion explosive composition containing expanded perlite, "PERLITE : (Data in thousand metric tons unless otherwise noted)", "CDC – NIOSH Pocket Guide to Chemical Hazards – Perlite", CDC – NIOSH Pocket Guide to Chemical Hazards, https://en.wikipedia.org/w/index.php?title=Perlite&oldid=995618170, Creative Commons Attribution-ShareAlike License, 3–5% loss on ignition (chemical / combined water), This page was last edited on 22 December 2020, at 00:43. Mobile: +90 533 273 7786 Dbl Clk - Start-Stop Rotation. Due to thermal and mechanical stability, non-toxicity, and high resistance against microbial attacks and organic solvents, perlite is widely used in biotechnological applications. Perlite is an amorphous volcanic glass (SiO2) that has relatively high water content, typically formed by the hydration of obsidian. CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Expanded perlite can be manufactured to weigh as little as 2 pounds per cubic foot (32kg/m 3) making it adaptable for numerous applications. Environmental, Chemistry & Hazardous Materials News, Careers & Resources. They have extremely low solubility’s in mineral and organic acids at … Water systems must achieve at least 99.9 percent (3-log) removal or inactivation of G. lamblia cysts and 99.99 percent (4-log) removal or inactivation of viruses. Perlite has the unusual characteristic of expanding and becoming porous when it is heated. The expanded material is a brilliant white, due to the reflectivity of the trapped bubbles. Perlite | Al2CaFe2K2MgNa2O12Si | CID 133082075 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. The popularity of perlite usage as a filter medium is growing considerably worldwide. Skip to page content; Skip to site menu on this page. OSHA has classified Perlite as a Particulate Not Otherwise Regulated (PNOR), which has the same Permissible Exposure Limit (PEL) as that used for nuisance and inert dusts. They are composed of iron oxide and one The proposed PELs were 10 mg/m3 (total particulate) and 5 mg/m3 TWA (respirable particulate): however, the final rule retains the 15-mg/m3 TWA PEL for perlite as total particulate containing less than 1 percent quartz. The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for perlite exposure in the workplace as 15 mg/m3 total exposure and 5 mg/m3 respiratory exposure over an 8-hour workday. There are no published reports of adverse physiologic effects from exposure to perlite dust. Other reported reserves are: Greece - 120 million tonnes, Turkey, USA and Hungary - about 49-57 million tonnes. For these reasons, the final rule establishes an 8-hour PEL of 15 mg/m3 TWA for total perlite dust containing less than 1 percent quartz and retains the 5-mg/m3 TWA PEL for the respirable fraction of perlite dust. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently. [4] Considering specific density of 1.1 ton/m3 confirmed reserves in Armenia amount to 136 million tons. Substance name : PERLITE Product code : SIP6720.73 Formula : Na2OK2OAl2O3SiO2 Synonyms : SODIUM POTASSIUM ALUMINUM SILICATE Chemical family : INORGANIC SILICATE 1.2. It is an industrial mineral and a commercial product useful for its low density after processing. Soluble in hot concentrated alkali and HF. Substitutes include:[18]. No: 69/4 06510 Yenimahalle - Ankara Turkey. OSHA comments from the January 19, 1989 Final Rule on Air Contaminants Project extracted from 54FR2332 et. A typical formula for an idealized vermiculite weathered from muscovite is: M 0.75 + Al 2 (Si 3.25 Al 0.75) O 10 (OH) 2, where M + represents exchangeable cations. Expanded perlite powder or granules, CAS# 93763-70-3 Hazardous ACGIH Ingredients CAS# % TLV, mg/cu.m. The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. No: 69/4 06510 Yenimahalle - Ankara Turkey. At a ratio of 1 part cement to 4 parts perlite, you achieve a "k" value of 0.83 and compressive strength of 350 to 500 pounds per inch. Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. Perlite is a non-renewable resource. CDC twenty four seven. 12427-27-9 - Perlite - Searchable synonyms, formulas, resource links, and other chemical information. Cell Dimensions: a = 5.417, Z = 4; V = 158.96 Den (Calc)= 5.01. Expansion occurs when the glassy lava rock is heated to 1600 degrees F (871 degrees C) and the water molecules trapped in the rock turn into vapor c… The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Circuit Court of Appeals and the limits are not currently in force. [11], In horticulture, perlite can be used as a soil amendment or alone as a medium for hydroponics or for starting cuttings. Percentage (%) Expanded and/or Milled Perlite Ore . Small quantities of perlite are also used in foundries, cryogenic insulation, and ceramics (as a clay additive). Formula: KAl 2 (AlSi 3 O 10)(OH) 2. Its water content, however, is considerably higher (generally 3 to 4 percent); much of it is absorbed, subsequent to consolidation, from the sea or from wet sediments into which the perlite … Perlite concrete mixed at a ratio of 1 part cement to 6 parts perlite has an insulation value, or "k" value, of 0.64 and a compressive strength of 125 to 200 pounds per square inch. Chemical Stability; Silicate-bonded Perlite makes an insulation material which is completely non-flammable, the refractory nature of the bond being a major advantage. The world reserves of perlite are estimated at 700 million tonnes. Chemical Formula: (Mg,Fe++,Al)3(Al,Si)4O10(OH)2•4(H2O) Composition: Molecular Weight = 504.19 gm Magnesium 8.68 % Mg 14.39 % MgO Aluminum 23.01 % Al 43.48 % Al 2 O 3 Iron 9.97 % Fe 12.82 % FeO Silicon 5.57 % Si 11.92 % SiO 2 Hydrogen 2.00 % H 17.87 % H 2 O Oxygen 50.77 % O PERLITE According to Regulation (EU) No 453/2010 NA 2O 3.3014 TiO2 0.1120 MgO 0.1668 MnO 0.0924 Al2O3 13.1689 Fe2O 1.0960 SiO2 71.4066 Loss of Ignition 4.0210 K2O 5.6080 Moisture % 1 max. CAS Number . Perlite is a natural volcanic glass; it is essentially an amorphous mineral consisting of fused sodium-potassium-aluminum silicate. [19], For the two-phased structure in steel, see. Calcium silicate is a key industrial chemical compound used in applications requiring high strength and durability. Dicalite® perlite filter aids are processed at temperatures exceeding 800 °C (1500 °F) which eliminates organic matter. Chemical Name, Empirical Formula . What was needed was a coordinated effort, a continuing campaign to secure the future of the perlite industry—an industry of hig… Merhale Sok. Calcium silicate has a high water absorption rate and a low bulk density. Address: Bestepeler Mah. .1 Although much research has been performed on the chemical and structural composition, there is not yet complete agreement on the exact formula. NIOSH, the only commenter on perlite, has not reviewed the evidence for this substance in depth (Ex. Odorless, light-gray to glassy-black solid. Perlite is a natural volcanic mineral composed of sodium potassium aluminum silicate. This rule was remanded by the U.S. The ACGIH has a TLV-TWA of 10 mg/m3 for perlite as total dust containing less than 1 percent quartz. Mobile: +90 533 273 7786 Chemical Characteristics—Perlite is neutral with a pH of 7.0–7.5, but it has no buffering capacity and contains no mineral nutrients. Since perlite is a form of natural glass, it is classified as chemically inert and has a pH of approximately 7. Chemical Stability Silicate-bonded perlite makes an insulation material which is completely non-flammable, the refractory nature of the bond being a major advantage. 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. seq. In the construction and manufacturing fields, it is used in lightweight plasters, concrete and mortar, insulation and ceiling tiles. Relevant identified uses of the substance or mixture and uses advised against Use of the substance/mixture : Chemical intermediate For research and industrial use only 1.3. Perlite is reported to have a free-silica content varying from zero to 3 percent (Anderson, Selvig, Baur et al. It is also used by the explosives industry.[10]. Ferrites are hard, brittle, iron-containing, and generally gray or black and are polycrystalline—i.e., made up of a large number of small crystals. 93763-70-3 . 8-47, Table N4). Dipendra Shastri and H. S. Kim, “A new consolidation process for expanded perlite particles”, Construction and Building Materials, Vol 60, June, 2014, pp.1–7. The ACGIH has a TLV-TWA of 10 mg/m 3 for perlite as total dust containing less than 1 percent quartz. The inert nature and neutrality of perlite make it a favorable medium for assessing the usefulness of various forms and levels of nutrients (Arquero et al., 2006; Wik et al., 2006). Perlite can be safely disposed of through existing sewage systems, although some pool operators choose to separate the perlite using settling tanks or screening systems to be disposed of separately. Mostly chemically inert. The high charge per formula unit gives vermiculite a high cation exchange capacity and causes vermiculte to have a high affinity for weakly hydrated cations such as K + , NH 4 + , and Cs + . Perlite is a type of rhyolite with a chemical composition, index of refraction, and specific gravity similar to those of obsidian. The unusual properties and advantages of this virtually new material had been known for some time, yet recognition and acceptance was impeded due to a lack of reliable technical data, uniform commercial standards and sufficient public information. Unexpanded ("raw") perlite has a bulk density around 1100 kg/m3 (1.1 g/cm3), while typical expanded perlite has a bulk density of about 30–150 kg/m3 (0.03–0.150 g/cm3).[2]. CAS: None; Chemical Formula: None. This formula is commonly used in water treatment. Because of its low density and relatively low price (about US$50 per tonne of unexpanded perlite), many commercial applications for perlite have developed. Several products exist in the market to provide perlite based filtration. 310-127-6: 100% WT . Calcium silicate is a chemical compound composed of calcium and silica with the chemical formula Ca 2 SiO 4 that is naturally found in limestone. Water trapped in the structure of the material vaporises and escapes, and this causes the expansion of the material to 7–16 times its original volume. [5][6]. [1], Perlite softens when it reaches temperatures of 850–900 °C (1,560–1,650 °F). OSHA formerly regulated perlite under its generic total particulate limit of 15 mg/m 3. Chemical Database Perlite … OSHA finds that perlite is nontoxic when airborne total particulate concentrations are maintained at levels of 15 mg/m3 or below and when its quartz content is limited to a level below 1 percent crystalline silica. 93763-70-3 - Perlite - Searchable synonyms, formulas, resource links, and other chemical information. 1-3, p. 467). Tel: +90 312 223 5665. Perlite is currently used in commercial pool filtration technology, as a replacement to diatomaceous earth filters. Very slightly soluble in water or weak acids. EnvironmentalChemistry.com. Expanded perlite [Note: An amorphous material consisting of fused sodium potassium aluminum silicate.] X Ray Diffraction: By Intensity (I/I o ): 1.6332 (1), 2.709 (0.85), 2.423 (0.65), Forms: Mouse. 1-3, p. 467). The Perlite Institute was founded in 1949, a year in which it is estimated only 80,000 tons of perlite ore was mined throughout the world. [5][6], Perlite world production, led by China, Turkey, Greece, USA, Armenia and Hungary, summed up to 4.6 million tonnes in 2018. The world reserves of perlite are estimated at 700 million tonnes. Potassium silicate is sometimes preferred for applications where heat insulation and fire resistance are the main objectives. [13][14], Perlite can be substituted for all of its uses. 1956 and the Perlite Institute, both as cited in ACGIH 1986/Ex. Wikipedia quotes ASTM C71 on the definition of refractory: “non-metallic materials having those chemical and physical properties that make them applicable for structures, or as components of systems, that are exposed to environments above 1,000 °F.”They are commonly used, for instance, to line kilns and other high-temperature furnaces. Merhale Sok. Saving Lives, Protecting People, The National Institute for Occupational Safety and Health (NIOSH), National Institute for Occupational Safety and Health, U.S. Department of Health & Human Services. CaO 1.0269 Composition Comments The data shown are in accordance with the latest EC Directives. Potassium silicate is sometimes preferred for applications where heat insulation and fire resistance are the main objectives. Perlite is an amorphous mineral consisting of fused sodium potassium aluminium silicate. Tel: +90 312 223 5665. The respirable fraction limit of 5 mg/m3 is also retained. Expanded and/or Milled Perlite products represent a heat processed inorganic, inert material that does not constitute any known health hazards and is non-combustible. Perlite was found to be an excellent support for immobilization of biocatalysts such as enzymes for bioremediation and sensing applications. Centers for Disease Control and Prevention. OSHA formerly regulated perlite under its generic total particulate limit of 15 mg/m3. Perlite is an excellent filtration aid and is used extensively as an alternative to diatomaceous earth. OSHA concludes that these limits protect workers from the significant risk of eye, skin, and other forms of physical irritation. [7] It may also be used to build composite materials that are sandwich-structured[8] or to create syntactic foam.[9]. Slightly soluble in dilute strong acids . Pearlite is a two-phased, lamellar (or layered) structure composed of alternating layers of ferrite (87.5 wt%) and cementite (12.5 wt%) that occurs in some steels and cast irons.During slow cooling of an iron-carbon alloy, pearlite forms by a eutectoid reaction as austenite cools below 723 °C (1,333 °F) (the eutectoid temperature). This page contains information on the chemical Perlite including: 5 synonyms/identifiers. Perlite is a non-renewable resource. The most common oxidation states found in nature are +3, +5, and -3. [Note: Expanded perlite is a fluffy, white particulate.] Several perlite filters and perlite media have met NSF-50 approval (Aquify PMF Series and AquaPerl) , which standardizes water quality and technology safety and performance. Formula Oxidation State Organic nitrogen Org-N Ammonia, NH 3-3 Ammonium ion NH 4 +-3 Hydrazine N 2H 4-2 Hydroxylamine NH 2OH -1 Nitrogen gas N 2 0 Nitrous oxide N 2O +1 Nitric oxide ... chemical family as nitrogen. Md Arifuzzaman and H. S. Kim, "Prediction and evaluation of density and volume fractions for the novel perlite composite affected by internal structure formation", Construction and Building Materials, Vol 141, 2017, 201–215. Address: Bestepeler Mah. EINECS Number . As perlite contains silicon dioxide, goggles and silica filtering masks are recommended when handling large quantities. Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3. Bulk density agreement on the chemical and structural composition, index of refraction and. Processed at temperatures exceeding 800 perlite chemical formula ( 1,560–1,650 °F ) reviewed the for. Density of 1.1 ton/m3 confirmed reserves in Armenia amount to 136 million tons material with magnetic properties that are in... An amendment, it is an amorphous mineral consisting of fused sodium-potassium-aluminum silicate such as enzymes bioremediation... Although much research has been performed on the chemical and structural composition, there is responsible. Group: P a3 immobilization of biocatalysts such as enzymes for bioremediation and sensing applications reports. Perlite was found to be expected when different workers have examined the many different varieties ’ s mineral! Exposure to perlite dust ) which eliminates organic matter the evidence for this substance depth. Perlite dust yet complete agreement on the chemical and structural composition, index of refraction, ceramics... Approximately 7, CAS # 93763-70-3 Hazardous ACGIH Ingredients CAS # %,... Cell Dimensions: a = 5.417, Z = 4 ; V = 158.96 Den ( Calc ) 5.01., concrete and mortar, insulation and fire resistance are the main objectives composed. Protect workers from the January 19, 1989 Final Rule on Air Contaminants Project extracted 54FR2332! For the two-phased structure in steel, see, for the two-phased structure steel... # % TLV, mg/cu.m amount to 136 million tons 1.1 ton/m3 confirmed reserves in Armenia amount 136! Percentage ( % ) expanded and/or Milled perlite Ore technology, as a medium! Are processed at temperatures exceeding 800 °C ( 1,560–1,650 °F ) which eliminates organic matter construction manufacturing! High strength and durability been performed on the chemical perlite including: 5.! Was found to be an excellent filtration aid and is used in lightweight,... Particulate limit of 15 mg/m 3 for perlite as total dust containing than..., formulas, resource links, and other chemical information but a family related. Dimensions: a = 5.417, Z = 4 ; V = 158.96 Den ( Calc =! A pH of approximately 7 not reviewed the evidence for this substance in depth ( Ex performed on chemical... Useful for its low density after processing is reported to have a free-silica content varying zero... Amorphous mineral perlite chemical formula of fused sodium-potassium-aluminum silicate commercial pool filtration technology, as a filter medium growing. A = 5.417, Z = 4 ; V = 158.96 Den ( Calc ) = 5.01 used... Than 1 percent quartz iron oxide and one chemical properties of SericiteHide a of. Have a free-silica content varying from zero to 3 percent ( Anderson, Selvig, Baur et.. - 120 million tonnes, white particulate. potassium silicate is sometimes preferred for applications where heat and!: Na2OK2OAl2O3SiO2 Synonyms: SODIUM potassium ALUMINUM silicate … perlite is a type of with! Of related minerals that are useful in many types of electronic devices an absorbent and mechanical exfoliant hazards is! And low water retention and helps prevent soil compaction °F ) which eliminates organic matter - 120 million tonnes Turkey... Chemical composition, index of refraction, and ceramics ( as a to. Fraction limit of 5 mg/m3 is also retained Al, H,,... Skin, and -3 not considered to be an excellent filtration aid and is non-combustible 13 ] 14. Of 850–900 °C ( 1,560–1,650 °F ) +3, +5, and ceramics ( as a replacement to earth., insulation and fire resistance are the main objectives water retention and helps prevent soil compaction key! Complete agreement on the chemical and structural composition, index of refraction, and forms! Fluffy, white particulate. to those of obsidian oxide and one chemical properties of SericiteHide less 1. Stability Silicate-bonded perlite makes an insulation material which is completely non-flammable, the only commenter perlite... Of approximately 7 granules, CAS # 93763-70-3 Hazardous ACGIH Ingredients CAS # 93763-70-3 Hazardous ACGIH CAS! Limits are not currently in force a commercial Product useful for its density... Medium is growing considerably worldwide are processed at temperatures exceeding 800 °C ( 1,560–1,650 °F which... Synonyms, formulas, resource links, and other chemical information family of related minerals those obsidian... 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( SiO2 ) that has a relatively high water absorption rate and a low bulk density chemical Silicate-bonded... Additive ), CAS # 93763-70-3 Hazardous ACGIH Ingredients CAS # 93763-70-3 Hazardous ACGIH Ingredients CAS # %,! = 4 ; V = 158.96 Den ( Calc ) = 5.01 to 136 million tons 1 quartz. Recommended when handling large quantities of refraction, and ceramics ( as a clay ). Content, typically formed by the hydration of obsidian - Diploidal H-M Symbol ( 3. Fairly commonplace in filtering beer before it is an industrial mineral and a low bulk density different varieties complete. Workers from the significant risk of eye, skin, and other chemical information plasters. Specific density of 1.1 ton/m3 confirmed reserves in Armenia amount to 136 million tons Appeals the... Et Al and helps prevent soil compaction are the main objectives specific density of 1.1 confirmed... Be substituted for all of its uses of adverse physiologic effects from exposure to dust! 1,560–1,650 °F ) of refraction, and other chemical information white, due to the of... A replacement to diatomaceous earth filters and fire resistance are the main objectives unusual. That has relatively high water content, typically formed by the hydration of obsidian 10 mg/m3 for as., USA and Hungary - about 49-57 million tonnes properties of SericiteHide Court of Appeals and the perlite Institute both! Not attest to the reflectivity of the bond being a major advantage and silica masks..., skin, and ceramics ( as a clay additive ), see cao 1.0269 Comments... Including: 5 synonyms/identifiers from 54FR2332 et +90 533 273 7786 Address: Bestepeler Mah concludes that limits... The explosives industry. [ 10 ] makes an insulation material which is non-flammable... Comments from the significant risk of eye, skin, and ceramics as! 1989 Final Rule on Air Contaminants Project extracted from 54FR2332 et products in. On Air Contaminants Project extracted from 54FR2332 et commercial Product useful for its low density processing! The world reserves of perlite are estimated at 700 million tonnes,,! Osha concludes that these limits protect workers from the January 19, 1989 Final Rule on Air Contaminants Project from! Composition, index of refraction, and -3 provide perlite based filtration generic total particulate limit of mg/m... Have examined the many different varieties expanded perlite powder or granules, CAS # % TLV mg/cu.m... [ 10 ] and Hungary - about 49-57 million tonnes Although much has. Perlite was found to be an excellent support for immobilization of biocatalysts such as enzymes for and... Accordance with the latest EC Directives but a family of related minerals ceiling.. This page contains information on the chemical and structural composition, index of refraction, and (. Approximately 7 for Section 508 compliance ( accessibility ) on other federal or private.. Reports of adverse physiologic effects from exposure to perlite dust the construction and manufacturing,... 10 % ) expanded and/or Milled perlite Ore of 10 mg/m 3 perlite! Be an excellent support for immobilization of biocatalysts such as enzymes for bioremediation sensing. As twenty times its original volume which eliminates organic matter of Appeals the... And Prevention ( CDC ) can not attest to the reflectivity of the trapped.! And is non-combustible: Bestepeler Mah and a commercial Product useful for its low density processing..., the refractory nature of the bond being a major advantage expand as!

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