• Safety and Health Topics | Hydrogen Sulfide - Hazards ...

    In addition, hydrogen sulfide gas burns and produces other toxic vapors and gases, such as sulfur dioxide. In addition to exposure to hydrogen sulfide in the air, exposure to liquid hydrogen sulfide can cause "blue skin" or frostbite.

    read more

  • COPPER AND LEAD SULFIDE | CAMEO Chemicals | NOAA

    Contains copper and lead sulfide in copper concentrates. Insoluble in water and denser than water. Primary hazard is to the environment. Immediate steps should be taken to limit spread to the environment. Chemical intermediate byproduct of the manufacturing processes. Chemical and physical properties vary depending on the components present.

    read more

  • Copper - Wikipedia

    Copper tarnishes when exposed to some sulfur compounds, with which it reacts to form various copper sulfides. Isotopes. There are 29 isotopes of copper. ... Seven metastable isotopes have been characterized; 68m Cu is the longest-lived with a half-life of 3.8 minutes.

    read more

  • Procedure Residual Copper Soluble Analysis -Assay Method -Acid

    Accuracy/Precision: This method is not intended to be accurate since there is not one standard procedure for the determination of non-sulphide copper. Results determined by the non-sulphide soluble copper digestion procedure, indicate to the percentage of oxide copper content minerals as well as chalcophyrite.

    read more

  • Removal of Hydrogen Sulfide - Tallahassee, FL

    Removal of Hydrogen Sulfide Using Oxidation. ... Hydrogen Sulfide concentrations of less than 1 mg/l will require 20 minutes of contact time. ... The H2S in turn reacts with copper pipes service pipe forming copper sulfide, which is a black material that causes staining on plumbing fixtures in the home.

    read more

  • Copper sulfide - Wikipedia

    Prominent copper sulfide minerals include Cu 2 S and CuS . In the mining industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulfides, are often referred to as "copper sulfides". In chemistry, a "binary copper sulfide" is any binary chemical compound of the elements copper …

    read more

  • MATERIAL SAFETY DATA SHEET - Angstrom Sciences

    COPPER SULFIDE MATERIAL SAFETY DATA SHEET SAFE HANDLING AND USE STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED: wear a self-contained breathing apparatus and full protective clothing.

    read more

  • Sulfide Dectection Kit Instructions - gusmerenterprises.com

    Sulfide Dectection Kit Instructions . The Sulfide Detection Kit allows the winemaker to conduct lab trials to detect and establish treatment ... Wait about 5 minutes, then add 6- 8 drops of the copper solution to Glasses 2 & 3. 4. Evaluate the aroma of the wine (drinking not advised): a. Glass 1 is the untreated control.

    read more

  • Sulfanylidenecopper | CuS - PubChem

    Groups of 30-32 rats were given single im injections containing 20 mg of cupric oxide (16 mg copper), cupric sulfide (13.3 mg copper), and cuprous sulfide (16 mg copper) into the left and the right thigh of each rat. All animals were observed for up to 20 months, …

    read more

  • Solved: Initial Observations: Before Beginning Observation ...

    Initial observations: before beginning Observations Observations after 30 minutes Chemical equation Element that is oxidized Element that is reduced Spectator ion Oxidizing agent Reducing agent www.HOLscience.com 16 ©Hands-On Labs, Inc. Experiment Oxidation-Reduction Activity Series Questions A. Define oxidation, reduction, and oxidation number.

    read more

  • Copper Sulfide CuS - espimetals.com

    Copper Sulfide No exposure limit established No exposure limit established. Copper dusts and mists (as Cu) 1 mg/m 3 1 mg/m 3. Engineering Controls: Ensure adequate ventilation to maintain exposures below occupational limits. Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of ...

    read more

  • Clean tarnished silver and copper the easy way | Arizona ...

    The tarnish on copper is usually copper sulfide, copper sulfate, or copper chloride which are removable with acid. The most common acid you have around the house is vinegar. (You can also use lemon juice.) The basic method is to soak a cloth or a kitchen sponge in vinegar, dip it in salt to make a mush, then rub the copper piece with it.

    read more

  • copper sulphide ore - klabrickellparents.com

    Jun 20, 2014· The copper wire reacts readily with the hot sulfur gas (S 8, S 4 and S 2), forming a dark grey, brittle crystalline solid of copper sulfide. After ca five minutes of heating, carefully remove the hook and copper sulfide using tongs and allow any excess sulfur to burn, thus cleaning the copper sulfide. Live Chat

    read more

  • How To Tarnish Silver and Copper Coins - All Info!

    3) Potassium Sulfide Method: the potassium sulfide (K2S, potassium sulfuratum) method can be used on copper coins that have become too bright by necessary cleaning. An aqueous solution of potassium sulfide with a concentration of 1:5 is prepared. The dissolving takes several minutes.

    read more

  • LPF Process Metallurgical Testing

    In order to visualize the overall flowsheet for processing oxide, transition, and sulfide ores, Metallurgical Testing Laboratory has shown the combined flowsheet for coordinating sulfide float and the proposed LPF plant for treating the oxide/transition ores separately.

    read more

  • Characterization of new copper sulfide materials - CINVESTAV

    reaction between a very stable copper complex, [Cu(cyclam)](ClO 4)2 (cyclam: 1, 4, 8, 11-tethraazacyclotetradecane), and Na2S provides a new amorphous copper sulfide which was deposited in the form of a thin film on the walls of the reaction vessel. To obtain the films, a polyethylene substrate was immersed into the

    read more

  • Copper Sulfide -- Limiting Reagent

    Sodium sulfide, ammonia, copper sulfate, and zinc sulfate are toxic. Wash hands before leaving the laboratory. The fumes (gases) from sodium sulfide and ammonia are toxic. Hydrogen sulfide, the gas present over sodium sulfide solutions, is extremely toxic. It smells like rotten eggs; the odor from rotten eggs is hydrogen sulfide.

    read more

  • Question #00668316: SCIN131 - Copper sulfide is oxidized ...

    Copper sulfide is oxidized by molecular oxygen to produce gaseous sulfur trioxide and solid copper (II) oxide. The gaseous product then reacts with liquid water …

    read more

  • Copper(I) Sulfide | AMERICAN ELEMENTS

    Rinse opened eye for several minutes under running water. Consult a physician. If swallowed: Seek medical treatment. ... Hydrogen sulfide Copper oxides Advice for firefighters Protective equipment: ... Copper(I) Sulfide is a crystalline solid used as a semiconductor and in photo optic applications.

    read more

  • Formation processes of copper sulfide thin films CuS ...

    reflectivity data for two copper sulfide films deposited on silicon. This data, from films with deposition times of 35 or 40 minutes at 40 °C, indicate a 20 nm increase in thickness from 76 – 96 nm in a 5 minute period. This rapid growth after a slow growth period supports previous

    read more

  • CHEMISTRY 105 - Millersburg Area School District

    The Empirical Formula of a Copper Sulfide. Lab protocol adapted by Catherine Sarisky . This lab has been scaled down to reduce the amount of sulfur dioxide emitted into the atmosphere! Objective. To experimentally determine the chemical formula of copper sulfide. Introduction

    read more

  • SYNTHESIS OF COPPER SULFIDE (CuS) THIN FILMS BY A …

    observed. When the initial copper layer is increased up to 70 nm (18 minutes sputtering), the surface morphology is smother but more porous. These morphology changes can be explained with the amount of copper available to diffuse and react with sulfur ions (S-2) during the solid vapor reaction to form copper sulfide.

    read more

  • Copper Sulfide Cu2S - espimetals.com

    Copper Sulfide No exposure limit established No exposure limit established. Copper dusts and mists (as Cu) 1 mg/m 3 1 mg/m 3. Engineering Controls: Ensure adequate ventilation to maintain exposures below occupational limits. Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of ...

    read more

  • Copper II Sulfide - MCCSD / Homepage

    Copper (II) Sulfide MSDS # 230.00 Section 1: Product and Company Identification Copper (II) Sulfide ... Eyes: Immediately flush eyes with excess water for 15 minutes, lifting lower and upper eyelids occasionally. ... Copper _II_ Sulfide.doc Author:

    read more

  • Copper sulfate | CuSO4 - PubChem

    Copper sulfate is a sulfate salt of copper. It is a potent emetic and is used as an antidote for poisoning by phosphorus. It also can be used to prevent the growth of algae.

    read more

  • Copper (II) sulfide - Fisher Scientific

    After eye contact Rinse opened eye for several minutes under running water. Then consult a doctor. After swallowing ... 1317-40-4 Copper (II) sulfide California Proposition 65 Prop 65 - Chemicals known to cause cancer ... This product contains copper and is subject to the reporting requirements of section 313 of the Emergency Planning and ...

    read more

  • Copper Sulfide | AMERICAN ELEMENTS

    Copper Sulfide CuS bulk & research qty manufacturer. Properties, SDS, Applications, Price. Free samples program. Term contracts & credit cards/PayPal accepted.

    read more

  • Anhydrous copper sulfate - MEL Chemistry

    Finally, the fourth option is to dissolve anhydrous copper sulfate. Use a disposable cup for it. You will obtain a blue solution. By the way, if you let water slowly evaporate from this solution (at a room temperature), blue crystals CuSO 4 *5H 2 O will be formed in the cup. Obviously, there are many ways to turn copper sulfate crystals blue again.

    read more

  • What is the chemical formula of copper (II) sulfide ...

    Apr 30, 2008· Best Answer: copper (II) has a valency of +2, and sulfide a valency of -2. so we can say that since one has an excess of 2 electrons (S), and the other has lost two electrons (Cu), a single atom of copper will combine with a single atom of sulfide.

    read more

  • Copper sulfide | Exhibition chemistry | Education in Chemistry

    The copper wire reacts readily with the hot sulfur gas (S 8, S 4 and S 2), forming a dark grey, brittle crystalline solid of copper sulfide. After ca five minutes of heating, carefully remove the hook and copper sulfide using tongs and allow any excess sulfur to burn, thus cleaning the copper sulfide.

    read more