Health & Environmental Research Online (HERO)


FtOH 8:2 (678-39-7)


195 References Were Found:

Technical Report
Technical Report

Toxicokinetic evaluation (C20619) of fluorotelomer alcohol 8+2 (678-39-7) in Harlan Sprague-Dawley rats exposed via gavage or intravenous injection

Author: NTP (2017) National Toxicology Program. HERO ID: 3874923


Technical Report
Technical Report

Environment tier II assessment for indirect precursors to perfluorooctanoic acid (pfoa). CAS registry numbers: 678-39-7, 1996-88-9, 93705-98-7, 68187-42-8, 53515-73-4.

Author: NICNAS (2017) Sydney, NW, Australia: National Industrial Chemicals Notification and Assessment Scheme. HERO ID: 3860296

[Less] This assessment was carried out under the National Industrial Chemicals Notification and Assessment . . . [More] This assessment was carried out under the National Industrial Chemicals Notification and Assessment Scheme (NICNAS). This scheme has been established by the Industrial Chemicals (Notification and Assessment) Act 1989 (the Act), to aid in the protection of the Australian people and the environment by assessing the risks of industrial chemicals, providing information and making recommendations to promote their safe use.

As part of reforms regarding Existing Chemicals, NICNAS has implemented a new framework to address the human health and environmental impacts of previously unassessed industrial chemicals listed on the Australian Inventory of Chemical Substances (AICS).

The Inventory Multi-tiered Assessment and Prioritisation (IMAP) framework was developed with significant input from stakeholders. The framework provides a more rapid, flexible and transparent approach for the assessment of existing chemicals.

Stage One of this program, which is being undertaken over four years from 1 July 2012, is examining 3000 chemicals meeting characteristics identified by stakeholders as needing priority assessment. This includes chemicals for which NICNAS already holds exposure information, chemicals identified as a concern or for which regulatory action has been taken overseas, and chemicals detected in international studies analysing chemicals present in babies' umbilical cord blood.

The IMAP framework is a science and risk-based model designed to align the assessment effort with the human health and environmental impacts of chemicals. It has three tiers of assessment, with the assessment effort increasing with each tier. The Tier I assessment is a high throughput approach using tabulated electronic data. The Tier II assessment is an evaluation of risk on a substance-by-substance or chemical category-by-category basis. Tier III assessments are conducted to address specific concerns that could not be resolved during the Tier II assessment.

NICNAS assessments are carried out by staff employed by the Australian Government Department of Health and the Australian Government Department of the Environment. The human health and environment risk assessments are being conducted and published separately, using information available at the time, and may be undertaken at different tiers.

This chemical/group of chemicals is/are being assessed at Tier II because the Tier I assessment indicated that it needed further investigation.

For more detail on the new program please visit: www.nicnas.gov.au.

Archival Material
Archival Material

Danish (Q)SAR database: [FtOH 8:2 CASRN 678-39-7]

Author: DTU Food (2017) HERO ID: 3980825


The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Geochemical and Hydrologic Factors Controlling Subsurface Transport of Poly- and Perfluoroalkyl Substances, Cape Cod, Massachusetts

Authors: Weber, AK; Barber, LB; Leblanc, DR; Sunderland, EM; Vecitis, CD (2017) Environmental Science and Technology 51:4269-4279. HERO ID: 3859471

[Less] Growing evidence that certain poly- and perfluoroalkyl substances (PFASs) are associated with negative . . . [More] Growing evidence that certain poly- and perfluoroalkyl substances (PFASs) are associated with negative human health effects prompted the U.S. Environmental Protection Agency to issue lifetime drinking water health advisories for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) in 2016. Given that groundwater is a major source of drinking water, the main objective of this work was to investigate geochemical and hydrological processes governing the subsurface transport of PFASs at a former fire training area (FTA) on Cape Cod, Massachusetts, where PFAS-containing aqueous film-forming foams were used historically. A total of 148 groundwater samples and 4 sediment cores were collected along a 1200-m-long downgradient transect originating near the FTA and analyzed for PFAS content. The results indicate that unsaturated zones at the FTA and at hydraulically downgradient former domestic wastewater effluent infiltration beds both act as continuous PFAS sources to the groundwater despite 18 and 20 years of inactivity, respectively. Historically different PFAS sources are evident from contrasting PFAS composition near the water table below the FTA and wastewater-infiltration beds. Results from total oxidizable precursor assays conducted using groundwater samples collected throughout the plume suggest that some perfluoroalkyl acid precursors at this site are transporting with perfluoroalkyl acids.

Archival Material
Archival Material

Study information: CEBS accession number 002-02182-0001-0000-6: Fluorotelomer alcohol 8+2

Author: NTP (2017) Available online at https://tools.niehs.nih.gov/cebs3/ntpViews/?studyNumber=002-02182-0001-0000-6. (Aug 5, 2017). [Website] HERO ID: 3860304

[Less] CEBS Accession Number: 002-02182-0001-0000-6 Chemical Name: Fluorotelomer Alcohol 8+2 CASRN: 678-39-7 NTP . . . [More] CEBS Accession Number: 002-02182-0001-0000-6
Chemical Name: Fluorotelomer Alcohol 8+2
CASRN: 678-39-7
NTP Study Type: Genetic Toxicology - Bacterial Mutagenicity
NTP Study ID: A74889
Vehicle Control: Dimethyl Sulfoxide
Study Result: Negative

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Perfluoroalkyl and polyfluoroalkyl substances in the lower atmosphere and surface waters of the Chinese Bohai Sea, Yellow Sea, and Yangtze River estuary

Authors: Zhao, Z; Tang, J; Mi, L; Tian, C; Zhong, G; Zhang, G; Wang, S; Li, Q; Ebinghaus, R; Xie, Z; Sun, H (2017) Science of the Total Environment 599-600:114-123. HERO ID: 3859252

[Less] Polyfluoroalkyl and perfluoroalkyl substances (PFASs), in the forms of neutral polyfluoroalkyl substances . . . [More] Polyfluoroalkyl and perfluoroalkyl substances (PFASs), in the forms of neutral polyfluoroalkyl substances in the gas phase of air and ionic perfluoroalkyl substances in the dissolved phase of surface water, were investigated during a sampling campaign in the Bohai Sea, Yellow Sea, and Yangtze River estuary in May 2012. In the gas phase, the concentrations of neutral ∑PFASs were within the range of 76-551pg/m(3). Higher concentrations were observed in the South Yellow Sea. 8:2 fluorotelomer alcohol (FTOH) was the predominant compound as it accounted for 92%-95% of neutral ∑PFASs in all air samples. Air mass backward trajectory analysis indicated that neutral ∑PFASs came mainly from the coast of the Yellow Sea, including the Shandong, Jiangsu, and Zhejiang provinces of China, and the coastal region of South Korea. The fluxes of gas phase dry deposition were simulated for neutral PFASs, and neutral ∑PFASs fluxes varied from 0.37 to 2.3pg/m(2)/s. In the dissolved phase of the surface water, concentrations of ionic ∑PFASs ranged from 1.6 to 118ng/L, with the Bohai Sea exhibiting higher concentrations than both the Yellow Sea and the Yangtze River estuary. Perfluorooctanoic acid (PFOA) was the predominant compound accounting for 51%-90% of the ionic ∑PFAS concentrations. Releases from industrial and domestic activities as well as the semiclosed geographical conditions increased the level of ionic ∑PFASs in the Bohai Sea. The spatial distributions of perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkane sulfonic acids (PFSAs) were different significantly. The Laizhou Bay was the major source region of PFCAs and the Yangtze River estuary was the major source of PFSAs.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Synthesis of Bifunctional Terminal Octasilicate-Core Dendrimer Containing Fluorocarbon and Hydrocarbon Chains

Authors: Irie, Y; Yuasa, S; Imoto, H; Naka, K (2017) Journal of Polymer Science. Part A, Polymer Chemistry 55:912-918. HERO ID: 3857418

[Less] A bifunctional terminal organic-inorganic dendrimer with fluorocarbon and hydrocarbon units at its terminal . . . [More] A bifunctional terminal organic-inorganic dendrimer with fluorocarbon and hydrocarbon units at its terminal groups was successfully prepared by a hydrosilylation reaction, and a combination of a ring-opening reaction and condensation reaction of octakis(propenylsuccinicanhydrido)polyhedraloctasilicate (OS-SA) with 1-decanol and 1H,1H,2H,2H-perfluoro-1-decanol. The structure of the OS-core dendrimer bearing the decyl and 1H,1H,2H,2H-heptadecafluorodecyl groups (OS-CF) was fully characterized by FT-IR, NMR spectra, and MALDI TOF MS spectrum. The crystallinity of the fluorinated domains in OS-CF decreased in comparison with that in I-CF and the fluorocarbon/hydrocarbon chains form no ordered structure due to suppression of the molecular motion of their branches resulting from the rigid inorganic core. The composite films of PMMA containing OS-CF were prepared through solution blending of PMMA with various concentrations of OS-CF (5, 10, and 20 wt %). The refractive index of the neat PMMA film is 1.49, and the refractive indices of the composite films containing OS-CF decrease linearly with increases in the OS-CF weight fraction. (c) 2017 Wiley Periodicals, Inc.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Perfluoroalkyl acids and their precursors in indoor air sampled in children's bedrooms

Authors: Winkens, K; Koponen, J; Schuster, J; Shoeib, M; Vestergren, R; Berger, U; Karvonen, AM; Pekkanen, J; Kiviranta, H; Cousins, IT (2017) Environmental Pollution 222:423-432. HERO ID: 3857420

[Less] The contamination levels and patterns of perfluoroalkyl acids (PFAAs) and their precursors in indoor . . . [More] The contamination levels and patterns of perfluoroalkyl acids (PFAAs) and their precursors in indoor air of children's bedrooms in Finland, Northern Europe, were investigated. Our study is among the most comprehensive indoor air monitoring studies (n = 57) and to our knowledge the first one to analyse air in children's bedrooms for PFASs (17 PFAAs and 9 precursors, including two acrylates, 6:2 FTAC and 6:2 FTMAC). The most frequently detected compound was 8:2 fluorotelomer alcohol (8:2 FTOH) with the highest median concentration (3570 pg/m(3)). FTOH concentrations were generally similar to previous studies, indicating that in 2014/2015 the impact of the industrial transition had been minor on FTOH levels in indoor air. However, in contrast to earlier studies (with one exception), median concentrations of 6:2 FTOH were higher than 10:2 FTOH. The C8 PFAAs are still the most abundant acids, even though they have now been phased out by major manufacturers. The mean concentrations of FOSE/As, especially MeFOSE (89.9 pg/m(3)), were at least an order of magnitude lower compared to previous studies. Collectively the comparison of FTOHs, PFAAs and FOSE/FOSAs with previous studies indicates that indoor air levels of PFASs display a time lag to changes in production of several years. This is the first indoor air study investigating 6:2 FTMAC, which was frequently detected (58%) and displayed some of the highest maximum concentrations (13 000 pg/m(3)). There were several statistically significant correlations between particular house and room characteristics and PFAS concentrations, most interestingly higher EtFOSE air concentrations in rooms with plastic floors compared to wood or laminate.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Neutral and ionic per- and polyfluoroalkyl substances (PFASs) in atmospheric and dry deposition samples over a source region (Tianjin, China)

Authors: Yao, Y; Chang, S; Sun, H; Gan, Z; Hu, H; Zhao, Y; Zhang, Y (2016) Environmental Pollution 212:449-456. HERO ID: 3361010

[Less] Per- and polyfluoroalkyl substances (PFASs) were detected in the atmosphere of a source region in Tianjin, . . . [More] Per- and polyfluoroalkyl substances (PFASs) were detected in the atmosphere of a source region in Tianjin, China. Fluorotelomer alcohols (FTOHs) were the dominant neutral PFASs in the atmosphere with total concentrations of 93.6-131 pg/m(3) and 8:2 FTOH contributing the most, whereas perfluorooctane sulfonamide derivatives (PFOSAs) were two magnitudes lower or undetected. In comparison, ionic PFASs (perfluoroalkyl carboxyl acids (PFCAs)) in the atmosphere were detected at similar or even higher levels. At wastewater treatment plants (WWTPs), the air over influent was found with higher levels of FTOHs than over aeration tank and effluent; whereas in the air over the aeration tank, the concentrations of PFOSAs and nonvolatile ionic PFASs substantially increased, suggesting a possible direct release of ionic PFASs to the atmosphere besides the atmospheric conversion from volatile precursors. In the air phase, a low proportion (1-5%) of PFCAs was subjected to dry deposition in the source region. Interestingly, the dry-deposition-to-bulk-air ratios of PFCA analogues were the lowest at medium chain lengths (C8 and C9) and increased with either shorter or longer chain length. The extraordinary affinity of shorter-chain PFCAs (C6-C7) to particles was presumed to be due to their smaller molecular size favoring the interactions between the carboxyl head groups and specific sorption sites on particulate matter.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Identification of biomarkers of exposure to FTOHs and PAPs in humans using a targeted and nontargeted analysis approach

Authors: Dagnino, S; Strynar, MJ; Mcmahen, RL; Lau, CS; Ball, C; Garantziotis, S; Webster, TF; Mcclean, MD; Lindstrom, AB (2016) Environmental Science and Technology 50:10216-10225. HERO ID: 3460580

[Less] Although historic perfluorinated compounds are currently under scrutiny and growing regulatory control . . . [More] Although historic perfluorinated compounds are currently under scrutiny and growing regulatory control in the world, little is known about human exposure to other polyfluorinated compounds presently in use. Fluorotelomer alcohols (FTOHs) and polyfluoroalkyl phosphate esters (PAPs) are known to degrade to terminal perfluorinated acids and toxic reactive intermediates through metabolic pathways. Therefore, it is important to characterize their human exposure by the identification of unique biomarkers. With the use of liquid chromatography-mass spectrometry-time-of-flight analysis (LC-MS-TOF), we developed a workflow for the identification of metabolites for the 8:2 FTOH and 8:2 diPAP. Analysis of serum and urine of dosed rats indicated the 8:2 FTOH-sulfate and the 8:2 diPAP as potential biomarkers. These compounds, as well as 25 other fluorinated compounds and metabolites, were analyzed in human serum and urine samples from the general population (n = 100) and office workers (n = 30). The 8:2 FTOH-sulfate was measured for the first time in human samples in 5 to 10% of the serum samples, ranging from 50 to 80 pg/mL. The 8:2 diPAP was measured in 58% of the samples, ranging from 100 to 800 pg/mL. This study indicates the FTOH-sulfate conjugate as a biomarker of exposure to FTOHs and PAPs in humans.