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Talc boiling point

Chemsrc provides Talc(CAS#:14807-96-6) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Talc are included as well Material Name: TALC USA 80/20 ID: TALC USA 80/20 Storage Procedures Store in a cool, dry, well-ventilated area. Exposure Guidelines A: General Product Information Keep formation of airborne dusts to a minimum. B: Component Exposure Limits Talc (238 -8779) ID: TALC USA 80/20 Appearance: Physical State: Vapor Pressure: Boiling Point: Solubility. Talc is a clay mineral, composed of hydrated magnesium silicate with the chemical formula Mg 3 Si 4 O 10 (OH) 2.Talc in powdered form, often combined with corn starch, is used as baby powder.This mineral is used as a thickening agent and lubricant; is an ingredient in ceramics, paint, and roofing material; and is a main ingredient in many cosmetics. It occurs as foliated to fibrous masses, and. The Talc, with the CAS registry number 14807-96-6, is also known as Cosmetic talc; Magnesium silicate talc.It belongs to the product inorganic chemical industry. Its EINECS number is 238-877-9. What's more, its systematic name is Talc. And it is finely powdered native hydrous magnesium silicate

Boiling Point (°C) Formula Weight. Manufacturer Name. Physical Form. Purity. Agency. Capacity (mL) Diameter (mm) Markush Class. Markush Group. Color. Package Size. Sterility. Sterilization Method. Application. Available for Sale. United States Globally. Showing 1-5 of 5 results for talc Advanced Search. Structure Search. Relevance. Compare. Above 900°C, talc progressively loses its hydroxyl groups and above 1050°C, it re-crystallizes into different forms of enstatite (anhydrous magnesium silicate). Talc's melting point is at 1500°C

Talc CAS#:14807-96-6 Chemsr

Boiling point 14000 °U (m) Ignition point none (m) Talc is an unremarkable white stone found in large quantities within dolomite. Like dolomite, talc is also magma-safe. Despite its softness in real life, talc can somehow be used in Dwarf Fortress for masonry and even mechanics. A chunk of talc NIOSH. Up to 10 mg/m3: (APF = 5) Any quarter-mask respirator. Click here for information on selection of N, R, or P filters. Up to 20 mg/m3: (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used. Talc (Mg 3 H 2 (SiO 3) 4) 14807-96-6 100 Section 4: First-aid Measures Inhalation: If breathes in, move person to fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration and transport to nearest medical facility for additional treatment. Ingestion: Do NOT induce vomiting. Call physician immediately

Talc (containing no asbestos and less than 1% quartz) TALC (SILICA AND FIBRE FREE) NFPA 704. data unavailable. General Description. Boiling Point: data unavailable. Molecular Weight: 379.26 (NTP, 1992) Water Solubility: less than 1 mg/mL at 70° F (NTP, 1992 Product Number Product Description SDS; 1.02144: anhydrous extra fine powder EMPROVE ® ESSENTIAL Ph Eur,BP,USP,FCC,E 341 (ii): Pricing: 1.02304: anhydrous extra fine powder suitable for use as excipient EMPROVE ® exp Ph Eur,BP,JP,USP,FCC,E 341 (ii): Pricin

Talc - Wikipedi

  1. ant fiber type in use in buildings. Other uses include paper products, paint and caulking, textiles and plastics
  2. Magnesium Silicate (Talc) *Prices are subject to change without notice due to market conditions. Expand... * Name is a required field * Email is not a valid address Boiling Point. 2467 o C / 4472.6 o F Density. 2.699 G/cm 3. Coef. of Expansion @ 20 o C. 22.4 x 10-6. Crystal Structure. Cubic, Face Centered. Electric Resistivity. 2.655 [μΩ.
  3. In accordance with column 2 of Annex VII (required in Section 7.3) of REACH Regulation 1907/2006 the study does not need to be conducted if the melting point is above 300ºC. The melting point of Talc (Mg3H2(SiO3)4 is >900 ºC therefore the study is not required
  4. Tert-butanol is a tertiary alcohol alcohol that is isobutane substituted by a hydroxy group at position 2. It has a role as a human xenobiotic metabolite. It derives from a hydride of an isobutane. Tert-butyl alcohol is a colorless oily liquid with a sharp alcohol odor. Floats and mixes with water
  5. Boric acid, also called hydrogen borate, boracic acid, and orthoboric acid is a weak, monobasic Lewis acid of boron.However, some of its behaviour towards some chemical reactions suggest it to be tribasic acid in the Brønsted sense as well. Boric acid is often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds

BOILING POINT Not available FREEZING POINT 950 °C, 1742 °F FLASH POINT Not available TALC (asbestos free) is listed in group 3 (not classifiable as to its carcinogenicity to humans). TALC-based body powder (perineal use of) is listed in group 2b (possibly carcinogenic t J&J scored a big win last month in a talc case in St. Louis, Get our Boiling Point newsletter for the latest on the power sector, water wars and more — and what they mean for California

Talc (containing no asbestos and less than 1% quartz) TALC (SILICA AND FIBRE FREE) NFPA 704. data unavailable. General Description. PHYSICAL DESCRIPTION: Odorless white to grayish-white very fine crystalline powder (unctuous). Readily adheres to the skin. Nonflammable, noncombustible, and nontoxic TALC UM POWDER ! FRENCH CHALK 1. PRODUCT IDENTIFICATION Product Name: talc powder INCI Name: talc Synonyms: magnesium silicate hydroxide, soapstone, steatite CAS Number: 14807 -96 -6 EINECS Number: 238 -877 -9 Origin: natural, modified 2. PHYSICAL & CHEMICAL PROPERTIES Melting Point: 150 oC (320 F) Boiling Point: not determined Vapor Pressure. TALC, FORTITALC® MP1250UC TALC, FORTITALC® MP1538LC TALC, FORTITALC®MP1538HC TALC, TALCRON MP2040, PC 2000, ICMP 4426 : 1.2. Relevant identified uses of the substance or mixture and uses advised against Boiling point : No data available : Flash point : No data available : Auto-ignition temperature : No data available : Decomposition.

Talc supplier CasNO

Physicians Formula Illuminating Veil Talc-Free Mineral Wear, Warming Glow (old formulation) Categoires: Description:GUIDECHEM reviewed Physicians Formula Illuminating Veil Talc-Free Mineral Wear, Warming Glow (old formulation) for safety according to the methodology outlined in our GUIDECHEM Cosmetics Database.We assess the ingredients listed on the labels of personal care products based on. Product name : Talc Product Number : 243604 Brand : Sigma-Aldrich Supplier : Sigma-Aldrich 3050 Spruce Street SAINT LOUIS MO 63103 USA Telephone : +1 800-325-5832 point/freezing point no data available Boiling point no data available Flash point not applicable Ignition temperature no data available Autoignition temperatur Boiling point - Density at 20°C 2.6-2.8 g/cm3 Solubility < 1 mg/l (at 21°C) in water, insoluble in cold bases and common acids Talc mostly occurs as platy crystals of piles of flexible, soft sheets that may be up to 1 cm long (IARC 1987), but it may also be granular or fibrous TALC AJM Vapor pressure No information available No information available Color Vapor density Melting point/freezing point No information available Specific gravity White No information available No information available Revision date 17-Jun-2015 Boiling point / boiling range Odor threshold No information availabl TALC N-11SP Vapor pressure No information available No information available Color Vapor density Melting point/freezing point No information available Specific gravity White No information available No information available Water solubility Insoluble in water Revision date 28-Oct-2015 Boiling point / boiling range Odor threshold No information.

Talc Sigma-Aldric

What is Talc? - Industrial Minerals Association - North

Magnesium silicate backing (asbestos-free talc) (14807- 96-6) OSHA: 2 mg/m3 TWA (respirable dust, less than 1% crystalline silica) 20 mppcf TWA (if 1% quartz or more, use quartz limit) ACGIH: 2 mg/m3 TWA (respirable fraction, particulate matter containing no asbestos and <1% crystalline silica) Formaldehyde (50-00-0) OSHA: 0.75 ppm TW • Stoddard solvent; Low boiling point naphtha - unspecified CAS-No. 8052-41-3 100 ppm Time Weighted Average (TWA):(ACGIH) 500 ppm 2900 mg/m3 PEL:(OSHA Z1) 100 ppm 525 mg/m3 Time Weighted Average (TWA) Permissible Exposure Limit (PEL):(US CA OEL) • Talc, Magnesium silicate hydrate CAS-No. 14807-96- Chemsrc provides CAS#:14807-96-6 MSDS, density, melting point, boiling point, structure, formula, molecular weight, synthetic route, etc

food grade talcum/talc powder(SiO2: 60% 325mesh)_OKCHEM

Talcum MgO3Si ChemSpide

evidence that the use of talc-based body powder for perineal dusting is a possible risk factor for ovarian cancer (Group 2B). This is not a route of exposure relevant to workers and applies only to one specific use of talc. NTP: In 2000, NTP reviewed both talc containing asbestiform fibers and talc not containin Talc . General Statement. Talc is an odorless white to greyish crystalline powder used in cosmetics, ceramics, paints, paper, plastics and Melting / boiling point Fl 900-1000°C ammability E Not a combustible dust xplosive properties Sel Not explosive f-ignition temperature Va No data available por pressure Talc Meets analytical specification of BP, Ph. Eur., powder, CAS Number: 14807-96-6,(18654 Fluka).Shop now or request a quote

Gelest formulary contains formulations for personal care and color cosmetics including skin care, bath and body, eyeshadows, foundations, lipsticks, and mascaras and eyeliners. Tailoring surface chemistry of pigments and powders provides robust, permanently modified behavior, expanding formulation latitude in personal care CALCINED TALC WHMIS Classification Class D Division 2 Subdivision A - Very toxic material causing other toxic effects 15.2.2. National regulations CALCINED TALC All naturally occuring components of this product are automatically included in the USEPA TSCA inventory list per 4- CFR 710.4 (b ). All other components are on the USEPA TSCA inventory. 9-9.5 suspension of 10%talc Melting point ≥ 1300 Celsius Initial boiling point No data available Flash point No data available Vapor density No data available Evaporation rate No data available Flammability Not Flammable Upper/Lower flammability Not explosive Vapor pressure No data available Specific gravity (H2O=1) 2.7 - 2.

DF2014:Talc - Dwarf Fortress Wik

Talc Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - www.gsmsds.com SECTION 9 : Physical and chemical properties Appearance (physical state,color): Explosion limit lower: Explosion limit upper: Odor: Vapor pressure: Odor threshold: Vapor density: pH-value: Relative density: Melting/Freezing point: Solubilities: Boiling point. SAFETY DATA SHEET Creation Date 03-Dec-2010 Revision Date 21-Oct-2019 Revision Number 4 1. Identification Product Name Talc Cat No. : AC222730000; AC222730025; AC222730100; AC222730250; AC222735000 CAS-No 14807-96-6 Synonyms Magnesium silicate, hydrous Recommended Use Laboratory chemicals. Uses advised against Food, drug, pesticide or biocidal product use..

CDC - NIOSH Pocket Guide to Chemical Hazards - Talc

Talc Powder CAS NO.14807-96-6. Min.Order: 1 Metric Ton FOB Price: USD $ 1.0-3.0/Metric Ton hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and develop Archaean hydrothermal talc evidence for high ocean temperatures. Chem. Geol., 30:341--349. Bedded sedimentary talc is abundant in Archaean greenstone belts in proximity to sea- floor hydrothermal vents. Trace-element abundances and oxygen-isotope evidence suggest formation from heated ocean water. It is suggested that talc forms by reaction of.

TALC CAMEO Chemicals NOA

What is the solubility of talc in 100 mL of 25 °C water? Explain why talc has this solubility. Describe how increasing temperature affects the solubility of solid and liquid solutes. Why is there less oxygen in ocean water near the equator than in water at higher latitudes? A factory discharges clean, warm water into a nearby stream MELTING POINT: 1500°C (2700°F); begins to lose water of hydration above 900°C (1600°F) BOILING POINT: Not applicable. SOLUBILITY: Insoluble in water and most organic solvents. The naturally-occurring form of magnesium silicate hydroxide is called talc, a soft mineral that feels waxy and soapy to the touch Additionally, a 5 % talc masterbatch based on the externally plasticized CA compound was added at 0.2, 0.6 and 0.8 wt.-% to investigate the influence of this nucleating agent on the foam morphology. The talc used has platelet geometry with a diameter d 0.5 of 2 µm. The physical foam extrusion tests were carried out on a 60 mm single screw. PRODUCT NAME AND SYNONYMS: TALC EATER III CHEMICAL NAME CAS NUMBER % TWA STEL ACGIH TLV OSHA PEL Light Aliphatic Solvent Naphtha 64742-89-8 40-60 300 ppm 500 ppm Aromatic Hydrocarbon Solvent 108-88-3 20-40 100 ppm 200 ppm =====SECTION II HAZARDOUS INGREDIENTS INFORMATION==== Melting point: 900-1000 C Boiling point: - Density: 2.58-2.83 g/ml (at 20 C) Solubility: Water: insoluble. References: NTP (1993), IARC (1987a). 2.3 Production and use Talc is a naturally occurring mineral and is produced by mining of talc rocks and processed by crushing, drying, and milling. Contaminating minerals are separate

Boiling Point/Range Not applicable Melting Point/Range 800°C / 1472°F Decomposition temperature °C No information available. Flash Point Not applicable _____ Page 3 / 8 Thermo Fisher Scientific - Talc Revision Date 18-Jan-2010 ____ As shown in Table 1, stearic acid has the highest melting and boiling points of the three. In addition, In terms of inorganic materials, talc (a hydrated magnesium silicate (Mg 3 Si 4 O 10 (OH) 2)), is often used as a lubricant or a glidant in formulations . Talc provides some essential lubricity for pharmaceutical operations because of its.

TALC EXTRA FINE POWDER EXTRA PURE PH EUR Sigma-Aldric

  1. Talc (Mg3H2(SiO3)4) 14807-96-6 30-35 Butene Polymer 9003-29-6 20-25 Aliphatic hydrocarbon resin 68003-51- 10-15 Isobutylene-Isoprene Polymer 9010-85-9 5-10 Boiling point/range °C No data available Boiling point/range °F No data available Melting point/range °C No data availabl
  2. eral is relatively unaffected in the range of temperature and pressure hereinafter described
  3. Melting/Freezing Point (°C): No data available Boiling Point (°C): No data available. Partition Coefficient: (Method, pH, Endpoint, Value) Decomposition Temperature (°C): No data available. Evaporation Rate (Gram/s): No data available _____ 722 Talc (non-asbestiform) Page 4 of 8 No data available Physical State: Capsule Corn Starch No data.
  4. ** VOC: Amount in g/L of organic compounds having an initial boiling point less than or equal to 250°C measured at a standard pressure of 101.3 kPa. Viscosities Krebs Stormer (KU): 115-125 ICI (Poise): 1.6-2.0 Film Properties Gloss (100 µm, on glass): Gloss 20°: 2-3 Gloss 60°: 8-9 Sheen 85°: 5-6 Contrast ratio: CR at 150 µm wet.

SAFETY DATA SHEET Preparation Date: 1/27/2015 Revision Date: 11/8/2017 Revision Number: G2 1. IDENTIFICATION Product identifier Product code: T1005 Product Name: TALC, POWDER, USP Other means of identification Synonyms: Talcum Hydrous Magnesium Silicat Talc 14807-96-6 20-40 Soda lime borosilicate glass 65997-17-3 1-5 Titanium dioxide 13463-67-7 1-5 Boiling point / boiling range No data Flash point 248.88 °C / 480 F CC (closed cup) Evaporation Rate Not determined Not determined Flammability (Solid, Gas) Flammability Limit in Air Upper flammability or explosive. Physicians Formula Illuminating Veil Talc-Free Mineral Wear, Bronze Glow (old formulation) Categoires: Description:GUIDECHEM reviewed Physicians Formula Illuminating Veil Talc-Free Mineral Wear, Bronze Glow (old formulation) for safety according to the methodology outlined in our GUIDECHEM Cosmetics Database.We assess the ingredients listed on the labels of personal care products based on data. Talc Toxicology Introduction. Talc as a pure chemical compound is a hydrous magnesium silicate, [Mg6 (Si8O 2 0) (OH4)], that exists in sheetlike crystalline forms or as fibers. The purity and physical form of any sample depends on the source of the talc and on the minerals found in the ore body from which it is refined

Chrysotile Mg3Si2H4O9 - PubChe

  1. Up to 300 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters. (APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode*. (APF = 50) Any powered, air-purifying respirator with a.
  2. • Stoddard solvent; Low boiling point naphtha - unspecified CAS-No. 8052-41-3 Control parameters 100 ppm Time Weighted Average (TWA):(ACGIH) 500 ppm 2900 mg/m3 PEL:(OSHA Z1) 100 ppm 525 mg/m3 Time Weighted Average (TWA) Permissible Exposure Limit (PEL):(US CA OEL) • Talc, Magnesium silicate hydrate CAS-No. 14807-96-
  3. DF2014:Dolomite. This article is about the current version of DF. Dolomite is a white medium- value and economic type of sedimentary stone that forms entire layers. It is also a flux stone, meaning it can be used in the production of pig iron and steel. Additionally, it is magma safe, with an extremely high melting point of 16507 °U
  4. Talc 64742-02-7 Zinc oxide 1314-13-2 Sulphur 7704-34-9 Section 3: Hazards Identification Emergency Overview: If ignited by excessive heat or open flame, this product will burn causing the release of toxic and irritating smoke. Smoke may contain noxious compounds and acrid compounds of sulphur
  5. SC-269363 - Magnesium silicate monohydrate (Talc) Boiling point No information available Property Values pH No information available Revision date 11-Aug-2015 Melting point/freezing point No information available _____ Explosive properties No information available Oxidizing properties No information available.
  6. TALC FINE POWDER EXTRA PURE MSDS CAS No: 14807-96-6 MSDS Melting point : 1000 °C Freezing point : No data available Boiling point : No data available Flash point : No data available Auto-ignition temperature : No data available Decomposition temperature : No data availabl
Transition metals

Magnesium Silicate (Talc) Micron Metals In

Melting point/range(°C/°F): No information available Product code: T1005 Boiling point/range(°C/°F): No information available Product name: TALC, POWDER, USP 5 / 12 Bulk density: No information availabl PHYSICAL & CHEMICAL PROPERTIES Appearance and Odor: White Powder; Odorless Boiling Point: Not Applicable Vapor Pressure: Not Applicable Specific Gravity: (Water=1): 2.55 Melting Point: 150oC (320oF) Boiling Point: not determined Vapor Pressure: not determined Vapor Density: not determined Evaporation Rate: not determined 2

Talc - Registration Dossier - ECH

  1. Talc. CAS# 14807-96-6. Catalog Number Cat# ALR-161N. 17034 Classification 17034 Class. None. Number of Components Comps. 1. Unit. 100 mg. Price (USD) Price. $10.00. Add to Cart Add. Compare Share. Additional Information. Storage Condition Storage. Ambient (>5 °C) Safety Data Sheet SDS. SDS. Certificate of Analysis COA. Lot Number: Download Go.
  2. ation of iron, copper, and calcium
  3. MSDS MATERIAL SAFETY DATA SHEET CHEMTREC: 800-424-9300 (USA) ----- 703-527-3887(Outside USA and Canada) CANUTEC: 613-996-6666 From: Mallinckrodt Baker, Inc 222 Red School Lan
  4. Talc (14807-96-6) ACGIH: 2 mg/m3 TWA (particulate matter containing no asbestos and <1% crystalline silica, respirable fraction) Boiling Point: 155-217 °C (Naphtha, petroleum, hydrotreated heavy) Decomposition: Not available Flash Point: 40-60 °C (Naphtha, petroleum
  5. Talc 14807-96-6 10 - 30 Titanium dioxide 13463-67-7 10 - 30 Limestone 1317-65-3 7 - 13 2-Butanone oxime 96-29-7 0.1 - 1 All concentrations are in percent by weight unless ingredient is a gas. Gas concentrations are in percent by volume. The manufacturer has claimed the exact percentage as trade secret under the OSHA Hazard Communication Standard

Tert-Butanol (CH3)3COH - PubChe

Industrial Talc Powder - Buy Industrial Talc at best price of Rs 7500/metric ton from Good Earth Minerals And Chemicals. Also find here related product comparison | ID: 2137089888 Talc,physical properties,suppliers,CAS,MSDS,structure,Molecular Formula, Molecular Weight ,Solubility,boiling point, melting point

Boric acid - Wikipedi

J&J settles California talc-cancer case in middle of jury

Physicians Formula Illuminating Veil Talc-Free Mineral

the synthetic Mg-Ni talc series and their bearing on assignments of lattice vibrd-tions is also discussed. IntnooucrroN Magnesium talc, Mg3Si+O10(OH)2, is the simplest trioctahe&al 2:l were neutralized with concentrated ammonium hydroxide to pH 8 at boiling point. Im 3MgO 4SiO 2 H 2 0 & molecular 379.22 nbsp; white, silver and white or pale yellow powder. A sense of grace, soft texture. 2.7-2.8g/cm 3 density. With lubrication, fire resistance, insulation, acid and alkali In order to make talc more readily dispersible in an aqueous medium, it is contacted, in a finely divided form, with an aqueous solution of an alkali metal hydroxide or ammonium hydroxide, it is then washed with clean water, whereafter it is thermally dried to remove at least a substantial proportion of the water associated therewith. The talc thus treated can be suspended in water containing.

The point of this experiment, in addition to learning whether salt or sugar dissolves faster in various liquids, is to learn how molecules interact in a solution. As you saw in the preceding illustration, the water molecules take up most of the room in the container. But there is still some available space in which the sugar or salt molecules. heavenly soles® liquid talc odor: 1. identification of the substance/preparation and the company product name: liquid talc melting point: n/a vapor pressure (psig) not available boiling point: 189° f/87°c vapor density: n/a flash point: 81 ° f/27 c tag closed cup ph: (1.10) about 7.1 solubility in water: disperses and dissolves. Boiling Point (°C): No data available. Partition Coefficient: (Method, pH, Endpoint, Value) Decomposition Temperature (°C): No data available. Evaporation Rate (Gram/s): No data available _____ PZ00138 Odor Threshold: No data available No data available. Lactose Molecular Formula: No data available Mixture Talc (non-asbestiform) Molecular. • Very high melting point • Conducts electricity as a result of delocalized electrons from double bonds. Chemistry 1011 Slot 5 9 -Talc. Chemistry 1011 Slot 5 11 Ionic Solids - Observations • All ionic compounds: - are solids at room temperature - have high melting points

Talc 14807-96-6 1-5 Limestone 1317-65-3 1-5 Molybdenum (IV) sulfide 1317-33-5 1-5 Boiling point / boiling range 316 °C Flash Point > 221 °C Open cup Evaporation Rate No data available None known Flammability (solid, gas) No data available None known Flammability Limit in Air None know talc contains crystalline silica at levels greater than 0.1%, but less than 1.0%. signs and symptions of overexposure abrasion may cause eye or skin irritation. inhalation of dust may cause irritation of the upper respiratory tract. long term, excessive exposure may cause severe and permanent damage to the lungs. medical cond aggravated by exposur

Technetium (Tayler Carter)Magnesium Silicate (Talc) - Micron MetalsA Phase Diagram for Bromine - YouTubeDried Acetonitrile Solvent - Manufacturer Exporter

Talc 14807-96-6 < 5 Composition comments All concentrations are in percent by weight unless ingredient is a gas. Initial boiling point and boiling range 212 °F (100 °C) Flash point Not applicable. Evaporation rate Not applicable. Flammability (solid, gas) Not applicable Melting Point: Not Available (>2200 0F) Boiling Point: Not applicable Vapor Pressure: Not applicable Vapor Density (Air = 1): Not applicable Solubility in Water: Insoluble Specific Gravity (H2) = 1): 1.6 to 2.1 Percent Volatile by Volume: Not applicable Evaporation Rate (Ethyl Ether = 1): Not applicable Viscosity: Not applicabl talc. ( talk ), Native hydrous magnesium silicate, sometimes containing small proportions of aluminum silicate, purified by boiling powdered talc with hydrochloric acid in water; used in pharmacy as a filter aid, as a dusting powder, and in cosmetic preparations. Synonym (s): French chalk, soapstone, talcum The annealing step also increases the complex storage shear modulus, G*, below the T g of PLA by about 46% and roughly triples the shear modulus in the region between the T g and T m that brackets the temperature of the boiling point of water. Blends containing the micro-ground paper were found to be tougher than those containing talc by.