Search results with tag "Sulfide"
Hydrogen Sulfide Fact - Occupational Safety and Health ...
www.osha.govIn addition, hydrogen sulfide is a highly flam-mable gas and gas/air mixtures can be explo-sive. It may travel to sources of ignition and flash back. If ignited, the gas burns to pro-duce toxic vapors and gases, such as sulfur dioxide. FactSheet Hydrogen Sulfide (H 2S) Hydrogen sulfide is a colorless, flammable, extremely hazardous gas with a ...
Sources, Fate, Transport, and Treatment of Sulfides in ...
scap1.orgFeb 12, 2015 · Sulfate, sulfides, and dissolved H 2 S carried with sewer flow (convective transport) Dissolution of H 2 S in sewer collection systems Increases in interfacial area for gas flux, not turbulence, drive gas release Think air stripper Example: drop manhole Transport of Sulfide
CYANIDE SAMPLING AND ANALYSIS - mi-wea.org
www.mi-wea.orgPositive interference on available Cyanide test Degrades Cyanide in samples for all methods during storage Test sample with buffered lead acetate paper Only shows positive for sulfide over 50 mg/l Available CN method (ASTM D-6888) eliminates sulfide interference up to 50 mg/l when using alternate acid reagent. Sulfide Reducing Acid Reagent
Hydrogen Sulfide in Aqueous Solvents - NIST
srdata.nist.govThe solubility of hydrogen sulfide in water has been investigated by numerous workers since the nineteenth century. Some of this early work (1-3) is in good agreement with more recent work. Hydrogen sulfide exists, in aqueous solution, in equilibrium with its ions. Solubilities which have been compiled correspond to bulk solubilities. For this
Chapter 3: Organic Compounds: Alkanes and Cycloalkanes
www.vanderbilt.edusulfides (disulfides) acidic basic HO opsin Lys-NH2 HN H Lys- opsin + rhodpsin Carbon-nitrogen multiple bonds N imine (Schiff base) CCN nitrile (cyano group) basic CH O CC O Carbonyl-oxygen double bonds (carbonyls) aldehyde ketones CO O H CO O C carboxylic acid ester CCl O acid chloride CO O C O anhydrides CN O amide
HYDROGEN SULFIDE: HUMAN HEALTH ASPECTS - who.int
www.who.intHydrogen sulfide: Human health aspects 1 FOREWORD Concise International Chemical Assessment Documents (CICADs) are the latest in a family of publications from the International Programme on
FWRJ Ozonation of Reverse Osmosis Permeate For Sulfide ...
www.fwrj.comFlorida Water Resources Journal • October 2013 41 6.3, acid treatment is required to lower the pH and increase the total sulfide partition of H 2S prior to aeration.
SOLUBILITY PRODUCT CONSTANTS - Université Laval
www2.chm.ulaval.caTherefore it is more useful in the case of sulfides to define a differ-ent solubility product K spa based on the reaction +M m S n (s) + 2H +mM + nH 2 S (aq) Values of K spa, taken from Reference 8, are given for several sulfides in the auxiliary table following the main table. Additional discus-
PRODUCT SAFETY DATA SHEET
data.energizer.comLithium iron disulfide batteries contain no sulfides or cyanides and they do not meet any other reactivity criteria including “reacts violently with water” and therefore do not meet any of the criteria established in 40 CFR 261.2 for reactivity.
SAFETY DATA SHEET - Valero Energy
www.valero.comHydrogen sulfide, a highly toxic gas, may be present. Signs and symptoms of overexposure to hydrogen sulfide include respiratory and eye irritation, dizziness, nausea, coughing, a sensation of dryness and pain in the nose, and loss of consciousness. Odor does not provide a reliable indicator of the presence of hazardous levels in the atmosphere.
Anaerobic Digestion Fundamentals
www.wef.orgHydrogen sulfide, when combined with water vapor, forms a weak acid that may damage biogas piping or equipment. Passing biogas through wood chips impregnated with iron sponge, biological scrubbers, or activated carbon help remove hydrogen sulfide from biogas. Liquid phase oxidation is an alternative removal method.
Hazard Control & PPE Selection Guide
www.usf.eduAcetaldehyde, diethyl ether, hydrogen sulfide, acetone, carbon disulfide, hexane Acetylene, ammonia, hydrogen, propane, propylene and methane (GHS: H220-H226, H281) NFPA rating of 4 Flash point below 73 F (22.8 C) and boiling point below 100 F. Flammable gases
Analysis of Cyanide (Total, Weak Acid Dissociable, and ...
www2.gov.bc.caWeak Acid Dissociable (WAD) Cyanide: ... forming volatile carbonyl sulfide, which is converted to sulfide upon absorption in an alkaline liquid. For manual total cyanide distillation analysis use the BC MOE HCl-HH method (Ref. 13) to mitigate thiocyanate interference. To mitigate thiocyanate interference on flow systems (CFA or FIA), the
MATERIAL SAFETY DATA SHEET
demo.rkmsuk.comSAN 0469 Bitumen Material Safety Data Sheet Syncrude Canada Ltd. Page 2 of 7 SKIN: Hot bitumen and bitumen fumes may cause moderate to severe irritation and burns. Cold ... Confined spaces may accumulate hydrogen sulfide gas. Hydrogen sulfide may cause respiratory tract irritation, nausea, headache, dizziness, pulmonary edema, loss of ...
Experiment 2-3 Qualitative Analysis of Metal Ions in Solution
web.williams.eduGroup III (Al3+, Cr3+, Fe3+, Zn2+, Ni2+, Co2+, Mn2+) cations produce slightly soluble sulfides (K sp values more than 10 -20 ) so they can be precipitated by relatively high amounts of sulfide ion; this can be achieved by adding a basic solution of H 2 S.
17. Manhole Channel Design. - WSSC Water
www.wsscwater.comf) Evaluate drops across pipe inverts larger than 0.1 foot for hydrogen sulfide generation, see Part Two, Section 28 (Hydrogen Sulfide (H2S) Control) and Part Two, Section 16 (Manhole Drop Connections). c. Radius of the Channel. 1) For sewer pipelines smaller than 12-inch diameter, provide a minimum radius of the centerline of
Environmental Protection Agency Wastewater Technology …
www3.epa.govSulfides 100-200 >200 Source: WEF and ASCE (1992), reprinted from Parkin, G.F. and Owen, W.F. (1986). Produce undesirable odors unless provisions are made to oxidize the escaping gases. Gas production must be minimized (sulfate concentration must be reduced to less than
CONFINED SPACE ENTRY PERMIT - Occupational Safety and ...
www.osha.govEntry Procedure Checklist: Complete the following steps before, during, and after a confined space entry: Step 1 ... Explosive Gases, Carbon Monoxide, and Hydrogen Sulfide readings and communicate them to the attendant to place on the Permit Form. Step 9 The attendant should maintain constant communication with the entrant until the entrant has ...
FactSheet - Occupational Safety and Health Administration
www.osha.govContact with liquid hydrogen sulfide causes frostbite. If clothing becomes wet with the liquid, avoid ignition sources, remove the clothing and isolate it in a safe area to allow
Material Safety Data Sheet - scavguy.com
scavguy.comMaterial Safety Data Sheet RCS Inc Section 1. Chemical Product and Company Identification Product Name: RC100 Hydrogen Sulfide Scavenger Code: RC100 Supplier: RCS Inc. 11224 23a Ave NW Edmonton AB, T6J4X7, Canada
Amine Treating Plant General Operation - Blue Sky …
www.blueskymidstream.com5 5. Hydrogen Sulfide is extremely flammable. Its flammability range is much greater than methane. C. Fire Care should be taken to keep the flanges and other connections tight to avoid leakage of any
<231> HEAVY METALS - DrugFuture
www.drugfuture.commetallic impurities that are colored by sulfide ion, under thenium hydroxide to a pH between 3.0 and 4.0, dilute with specified test conditions, does not exceed the Heavy metals water to 40 mL, and mix. limit specified in the individual monograph in percentage Procedure—To each of the three tubes containing the
HEALTH AND SAFETY MANUAL - reagansafety.com
www.reagansafety.com1 Purpose/Scope: The purpose of this program is to establish minimum requirements for site specific H 2 S safety, which will enhance safety in the occupational setting where hydrogen sulfide is
Comparison of Field Olfactometers in a Controlled Chamber ...
www.fivesenses.comComparison of Field Olfactometers in a Controlled Chamber using Hydrogen Sulfide as the Test Odorant M.A. McGinley*, C.M. McGinley* * St. Croix Sensory, Inc., P.O ...
SAFETY DATA SHEET - Airgas
www.airgas.comHydrogen Sulfide Section 8. Exposure controls/personal protection TWA: 10 ppm 8 hours. OSHA PEL Z2 (United States, 2/2013). AMP: 50 ppm 10 minutes.
TCEQ-Fact Sheet - PSD and Nonattainment Significant …
www.tceq.texas.govHF = hydrogen fluoride . HGB = Houston-Galveston-Brazoria . H. 2S = hydrogen sulfide . H 2SO 4 = sulfuric acid . µg/m. 3 = microgram per cubic meter . NAICS = North American Industry Classification System . NO. 2 = nitrogen dioxide . NO x = oxides of nitrogen. Criteria pollutant and PM 2.5 precursor evaluated as NO 2 and ozone precursor ...
AERATION - MRWA
www.mrwa.comdioxide) and oxidizes dissolved metals such as iron, hydrogen sulfide, and volatile organic chemicals (VOCs). Aeration is often the first major process at the treatment plant. During aeration, constituents are removed or modified bee with the treatment fore they can interfer processes.
Wine Analysis: from ‘Grape to Glass’
tools.thermofisher.comwine production, measurement is critical, knowing what to measure and when, and ... formation of hydrogen sulfide. After fermentation is complete, the coarse sediment is removed by racking or centrifugation. However, colloidal suspensions may also need to be removed or they will
HYDROGEN SULFIDE MEASUREMENT AND DETECTION
asgmt.comJan 24, 2003 · battery or a fixed electrical source, sound an alarm when the H 2 ... tubes filled with lead acetate. As a known volume of gas is drawn through the tube, the lead acetate changes from white to brown. The amount of color change depends ... on wet chemical procedures. An example of a wet
Activated Sludge Microbiology Problems and Their Control
www.dec.ny.govHydrogen sulfide toxicity is highly pH dependent, due to the H2S form being the toxic agent and not HS-. The pKa for H2S is 7.0, indicating higher toxicity at a pH of 7 or less when H2S is ... Control of denitrification is either by control of nitrification (reduced sludge age or reduced
Incompatibilities of concentrated nitric acid: Never mix ...
ccc.chem.pitt.eduSulfides acids Sulfuric Acid potassium (sodium or lithium) chlorate, perchlorate, or permanganate Tellurides reducing agents. EPA's Chemical Compatibility Chart EPA-600/2-80-076 April 1980 A METHOD FOR DETERMINING THE COMPATIBILITY OF CHEMICAL MIXTURES # REACTIVITY GROUP NAME
GX-6000 Operator's Manual Rev S - RKI Instruments
www.rkiinstruments.comsample draw gas monitor is capable of detecting the presence of combustible gas, oxygen (O2), carbon monoxide (CO), hydrogen sulfide (H2S), and various other toxic gases simultaneously. The GX-6000’s rugged, reliable, and easy-to-use design makes it ideally suited for a wide range of applications, including sewage treatment plants, utility
Product Bulletin ET Valve September 2021 Fisher ET, EAT ...
www.emerson.comapplications, including sulfide and chloride stress-cracking environments common to the oil and gas production industries. To discuss available constructions, contact your Emerson sales office and ... references are to NACE MR0175-2002. Optional materials are available to meet NACE MR0103 and NACE MR0175 / ISO 15156. Material requirements
6.1 Carbon Black - United States Environmental Protection ...
www3.epa.govsulfur compounds in the process flue gas. Combustion efficiencies of 99.6 percent for hydrogen sulfide and 99.8 percent for CO have been measured for a flare on a carbon black plant. Particulate emissions may also be reduced by combustion of some of the carbon black particles, but emissions of sulfur dioxide and nitrogen oxides are thereby ...
DENR ADMINISTRATIVE ORDER NO. 26-A Series 1994 Subject ...
water.emb.gov.phHydrogen Sulfide Iron Manganese pH Sodium Sulfate Total Dissolved Solids Zinc Unobjectionable Unobjectionable 5 TCU 5 NTU 0.2 250 1 300 (as CaCo3) * 0.05 1 0.5 6.5 - 8.5 200 * 250 500 5 * Table 3.5 Standard Values for Disinfectants and Disinfectant By - Products Constituents Maximum Level (mg/L) a. Disinfectant Chlorine (residual) b ...
NACE MR0175/ISO 15156-3 - Octalsteel
www.octalsteel.comThis part of NACE MR0175/ISO 15156 addresses all mechanisms of cracking that can be caused by H 2S, including sulfide stress cracking, stress corrosion cracking, hydrogen-induced cracking and stepwise cracking, stress-oriented hydrogen-induced cracking, soft zone cracking and galvanically induced hydrogen stress cracking.
Hydrogen Recovery - Linde Engineering
www.linde-engineering.comHydrogen sulfide Mercaptanes BTX Water weak strong Pressure swing adsorption plant in Leuna, Germany 4 The process. ... valve skid(s) with interconnecting piping, control valves and instrumentation and a control system for control of the unit. The pressure swing adsorption process has four basic process steps: – Adsorption ...
Underground Construction (Tunneling)
www.osha.govHydrogen sulfide levels...15 Special conditions for drilling and blasting underground...15 2. Special requirements for using cranes ... Control of access and egress In addition to establishing a check-in/check-out procedure, the employer must ensure safe access to …
SAFETY DATA SHEET - EnerSys
www.enersys.comSulfuric Acid: Sulfur trioxide, carbon monoxide, sulfuric acid mist, sulfur dioxide, and hydrogen sulfide. Lead Compounds: High temperatures likely to produce toxic metal fume, vapor, or dust; contact with strong acid or base or presence of nascent hydrogen may generate highly toxic arsine gas. Hazardous Polymerization: Will not occur XI.
AN OVERVIEW OF NACE INTERNATIONAL STANDARD …
www.heatingandprocess.comstandard "Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments" was published in mid-April 2003. Following is an overview of the document, including discussion of pertinent differences among MR0175-2002, MR0175-2003, and MR0103. NACE CORROSION/2004 Paper 04649 Page 2 www.nace.org
VOLCANIC-ASSOCIATED MASSIVE SULFIDE DEPOSITS …
pubs.usgs.govMagnetite is present in some deposits and barite can be very abundant in Kuroko-type VMS deposits, in which it commonly forms an important ore facies. Gypsum and anhydrite are also abundant in some Kuroko deposits. The most common silicate
Standard Operating Procedure Chemical Storage Guidelines ...
www.lsu.eduupon contact, such as sodium cyanide, iron sulfide, calcium carbide 8.1.4 Segregate acids from bases. 8.2 Bases 8.2.1 Segregate bases from acids, metals, explosives, organic peroxides and easily ignitable materials. 8.3 Solvents (Flammable and Halogenated Solvents) 8.3.1 Store in approved safety cans or cabinets.
Product Bulletin ES Valve October 2020 Fisher ES and EAS …
www.emerson.comof applications, including sulfide and chloride stress-cracking environments common to the oil and gas production industries. To discuss available constructions, contact your Emerson sales office and ... references are to NACE MR0175-2002. Optional materials are available to meet NACE MR0103 and NACE MR0175 / ISO15156. Material requirements
RULE 102 DEFINITIONS Volatile Organic Compounds (VOC)
www3.epa.govVolatile Organic Compounds (VOC) Any chemical substance which contains compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, determined to have photochemical reactivity. ... Carbonyl sulfide 463581 Catechol 120809 Chloramben 133904 Chlordane 57749 ...
GENERAL CHEMISTRY REFERENCE SHEET
www.usna.eduS2- sulfide ion SO 4 2- sulfate ion SO 3 2-sulfite ion CO 3 2- carbonate ion Cr 2O 7 2-dichromate ion HPO 4 2- hydrogen phosphate - PO 4 3-phosphate ion Other Compounds Formula Name H 2O water NH ammonia CH methane (natural gas) O 3 ozone H 2 2 hydrogen peroxide 2 2, O 2, F 2, Cl 2, Br 2, I 2 diatomic molecules He, Ne, Ar Noble gases . Acids ...
Sulfide Stress Cracking --NACE MR0175-2002, …
www.emerson.comSulfide Stress Cracking--NACE MR0175-2002, MR0175/ISO 15156 650 Te c h n i c a l The Details NACE MR0175, “Sulfide Stress Corrosion Cracking Resistant Metallic Materials for Oil Field Equipment” is widely used throughout the world. In late 2003, it became NACE MR0175/ ISO 15156, “Petroleum and Natural Gas Industries - Materials for Use in H 2
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