NO.10 Chemical Established in 1994, specializing in the development,
production and sales of "plasticizer chlorinated paraffin" chlorinated paraffin heat stabilizer, flame retardant and ADC foaming agent..
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ADC Foaming Agent
ADC foaming agent appearance for yellow to light yellow powder,the finer particl…
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Chlorinated Paraffin 52#
Chlorinated Paraffin 52# is Water white to yellow transparent oily viscous liqui…
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Chlorinated Paraffin 62#
Chlorinated Paraffin 62# is Water white to yellow transparent oily viscous liqui…
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Chlorinated Paraffin 70#
chlorinated paraffin70# an additive fire-retardant of fine general performance w…
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Chlorinated Nparaffin Heat Stabilizer
Methyl tin heat stabilizer has stability, transparency, weather resistance and c…
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Dibutyl Phthalate / DBP
DBP is the most commonly used plasticizer of PVC, which can make products have g…
Emerging Contaminants :: Factsheets PFOS …
PFOA (NH4 salt) vapour pressure (Pa, at 20 °C) 3.31 * 10-4: 13 * 10-3: Literature shows that PFOS (potassium salt) is substantially non-volatile (see table). And the ammonium salt of PFOA has a very low volatility, too. But PFOA is relatively volatile with a vapour pressure of 70 Pa. We cannot help noticing that large differences between the different forms are being reported. Literature ...
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Vapor Pressures of Perfluorooctanoic, -nonanoic, -decanoic ...
26/08/2005· A dynamic method was used to determine the vapor pressures of perfluorooctanoic, -nonanoic, -decanoic, -undecanoic, and -dodecanoic acids. Measurements were made over the temperature range from (59.25 to 190.80) °C for perfluorooctanoic acid, from (99.63 to 203.12) °C for perfluorononanoic acid, from (129.56 to 218.88) °C for perfluorodecanoic acid, from (112.04 to …
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Perfluorooctanoic acid | C8HF15O2 - PubChem
3.2.7 Vapor Pressure. Help. New Window. 0.53 mmHg. EPA DSSTox. 3.16X10-2 mm Hg at 25 °C. PMID:21112604. Bhhatarai B, Gramatica P; Environ Sci Technol 45(19): 8120-8 (2011) Hazardous Substances Data Bank (HSDB) 3.2.8 Octanol/Water Partition Coefficient. Help. New Window. log Kow = 4.81 (est) US EPA; Estimation Program Interface (EPI) Suite. Ver. 4.11. Nov, 2012. Available from, as …
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Vapor Pressures of Perfluorooctanoic, -nonanoic, -decanoic ...
Request PDF | Vapor Pressures of Perfluorooctanoic, -nonanoic, -decanoic, -undecanoic, and -dodecanoic Acids | A dynamic method was used to determine the vapor pressures of perfluorooctanoic ...
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Modeling the air–soil transport pathway of ...
The estimated K aw value for PFOA from vapor pressure and water solubility listed in Paustenbach et al. (2007) is 8.6 × 10 −5. Another reported K aw value for a neutral form is 0.00102 ( Barton et al., 2007 ).
Chat OnlinePerfluorooctanesulfonic acid | C8HF17O3S - PubChem
Perfluorooctanesulfonic acid or perfluorooctane sulfonate (PFOS), is a man-made fluorosurfactant and global pollutant. PFOS was the key ingredient in Scotchgard, a fabric protector made by 3M, and numerous stain repellents. It was added to Annex B of the Stockholm Convention on Persistent Organic Pollutants in May 2009. PFOS can form from the degradation of precursors in addition to industrial ...
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Solid Vapor Pressure and Enthalpy of …
The PFOA vapour pressure measurements all show a vapour pressure of around 4 Pa at 25 °C [Kaiser et al., 2005; Washburn et al., 2005; Barton et al., 2008]. The Advanced Chemistry Development ...
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Perfluorinated Chemicals (PFCs): Perfluorooctanoic Acid ...
PFOS and PFOA compounds are highly soluble in water and typically present as an anion (conjugate base) in solution and have very low volatility due to their ionic nature (ATSDR, 2009). Long chain PFCs have low vapor pressure, and aquatic environments are expected to be their primary sink in the environment (Environment Canada, 2010). These ...
Chat OnlineTreating Emerging Contaminants: PFOS & PFOA | WaterWorld
A strong fluorine-carbon bond and low vapor pressure can make PFOA and PFOS resistant to many municipal and home water treatment technologies, including direct oxidation, biodegradation, air stripping, vapor extraction and direct photolysis (ultraviolet light), making treatment difficult. However, several groundwater treatment options may be ...
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PHYSICAL AND CHEMICAL PROPERTIES OF PFAS COMPOUNDS
PHYSICAL AND CHEMICAL PROPERTIES OF PFAS COMPOUNDS Name Acronym CAS # Molecular formula MW Water Solubility* 20-25oC (g/l) Vapor Pressure [Pa] Density 20-20oC (g/ml) Melting Point [oC] Boiling Point [oC] Dissociation Constant [pKa] Perfluoroalkyl Carboxylates / PFCAs Perfluoroalkyl Carboxylic Acids Perfluorobutanoic AcidF PFBA 375-22-4 (CF2)3COOH 214.04 Miscibile 1307 1.65 …
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CLU-IN | Contaminants > Per- and Polyfluoroalkyl ...
Perfluorooctanoic acid (PFOA) at environmental pH is the anion perfluorooctanoate with estimated water solubility of 9,500 mg/L and negligible vapor pressure (USEPA 2016a). Perfluoroooctane sulfonate (PFOS) has an estimated water solubility of 680 mg/L and negligible vapor pressure (USEPA 2016b).
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CLU-IN | Contaminants > Per- and Polyfluoroalkyl ...
Perfluorooctanoic acid (PFOA) at environmental pH is the anion perfluorooctanoate with estimated water solubility of 9,500 mg/L and negligible vapor pressure (USEPA 2016a). Perfluoroooctane sulfonate (PFOS) has an estimated water solubility of 680 mg/L and negligible vapor pressure (USEPA 2016b).
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Vapor Pressures of Perfluorooctanoic, -nonanoic, …
Request PDF | Vapor Pressures of Perfluorooctanoic, -nonanoic, -decanoic, -undecanoic, and -dodecanoic Acids | A dynamic method was used to determine the vapor pressures of perfluorooctanoic ...
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Atmospheric deposition as a source of contamination at ...
13/12/2018· aerosols suspended in air (e.g., water vapor) • Neutral PFAS such as FTOHs often the most dominant PFAS in the gas phase in urban areas, over open ocean, and in remote regions • Ionic PFAS such as PFOA and PFOS (with low vapor pressure, high solubility) tend to be dominant species in airborne particulate matter
Chat OnlinePerfluoroalkylated substances: PFOA, PFOS and PFOSA
Perfluoroalkylated substances: PFOA, PFOS and PFOSA 9 TABLE 1-2. PFOS. PHYSICAL AND CHEMICAL PROPERTIES OF PFOS, POTASSIUM SALT (TABLE EXTRACTED FROM EFSA, 2008) Property Value Appearance at normal temperature and Pressure White powder Molecular weight 538 g/mol Vapour Pressure 3.31 x 10-4 Pa (20°C) Water solubility 519 mg/L (20 ± 0.5 °C) 680 mg/L (24 …
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