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General Risk Assessment Form

A hot plate or heating mantle must be used when flammable liquids are to be heated. After use: Adjust the collar to create a cool flame. If your flame is hot and blue, twist the collar to close off the air flow and produce a yellow safety flame. Shut …

Reflux and distillation - ASTA

above 100 C, a heating mantle with a correctly fitting flask or a sand bath can be used. A Bunsen burner, or any other naked flame, is not advisable, unless heating non-flammable ... Science ASSIST recommends that a risk assessment be conducted and SDSs consulted for all chemicals used and produced. The risk assessment should also be ...

Labomiz Scientific Lab Equipment Scientific Instruments

Class II biosafety cabinet type B2 MBSC-3A is a floor mounted containment with 100% air exhaustion. The use of non-volatiles or lightly volatiles is reviewed through a risk assessment process for personal safety. The HEPA filter exhaust system promotes development of experimentally suitable environment.

Hazardous area classification and Laboratory operations ...

Direct heating by bunsen burners and other obvious continuous ignition sources should be avoided, but the greatest risk probably comes from electrical equipment in use as part of the operation. Much of this cannot be avoided, and may well not be available in ignition-protected form, eg hot plates, heating mantles, stirrer controllers.

ITA Instruments - Directive-compliant

For statements dealing with the problem of risk assessment, please refer to appendix. * Do ITA Instruments heating mantles comply with the new directives? Yes. The ITA mantles have been designed and produced in accordance with the current safety regulations pursuant to EN 61010-1:2010. What is the unique aspect of ITA Instruments heating mantles?


Hand protection Use a properly fitted, particulate filter respirator complying with an approved standard if a risk assessment indicates this is necessary. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product and the safe working limits of the selected respirator.

Oil Baths in Laboratories Environmental Health and Safety

Hazards. Hazards associated with the use of oil baths include hot temperatures and fire. Hot oil can cause severe skin burns. Accidental additions of water to a hot oil bath can cause serious splattering. Mineral oil has an obnoxious smell at the elevated temperatures. Reaction flasks immersed in an oil bath can become dangerous slippery.

The Synthesis of Ethyl Ethanoate

Heat the oil-bath until the temperature reaches 150oC – measured with 0-360oC thermometer. Stir regularly with a glass rod. Turn off the Bunsen. Run about 2cm3 of the mixture in from the dropping funnel. There after run it in at the same rate as the ester distils over into the collecting flask. The ester will distil over at between 65o and 75oC.

21. Two-step synthesis - Experiments on Film

heating mantle / Bunsen burner with water-bath. clamp-stand, clamp, boss ... Risk Assessment. Hazard Risk Control measure; Conc. H 2 SO 4 solution – corrosive. Contact with eyes skin. Eye: flood with tap-water (10min). See doctor. Skin: remove excess with dry towel. Drench with water. Methylbenzenecarboxylate (C 6 H 5 COOCH 3) – irritant.

heating mantle chemistry

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Heating or fire can release toxic gas. HAZARDOUS COMBUSTION PRODUCTS Under fire conditions: Carbon monoxide, Carbon dioxide (CO2) ... RESULTS OF PBT AND vPvB ASSESSMENT Component: Syrups, Hydrolyzed Starch CAS-No. 8029-43-4 RESULTS OF PBT AND vPvB ASSESSMENT Result The Substance is not considered to be persistent, …

11. Nucleophilic substitution reaction - Experiments on Film

heating-mantle / bunsen burner with water-bath. clamp stand. Risk Assessment. Hazard Risk Control measure; 0.1mol dm-3 NaOH solution – no hazard. Contact with eyes and skin. Eye: flood with tap water (10min). Skin: drench with water. 1-bromobutane – flammable, serious health hazard, hazardous to the aquatic environment.

(PDF) Human health risk assessment of cyanide levels in ...

Human health risk assessment of cyanide levels in water and tuber crops from Kenyasi, a mining community in the Brong Ahafo Region of Ghana ... Concentrations, hydrochemistry and risk evaluation of selected heavy metals along the Jimi River and its tributaries at Obuasi a mining enclave in Ghana.

Human Health Risk Assessment of Heavy Metals in Snail ...

Human Health Risk Assessment of Heavy Metals in Snail (Archachatina marginata ) from Four ... (HCL) on a heating mantle to near dryness. Cr, Zn, Mn and were analyzed using Hollow Cathode Lamp (HCL ...

Preparation of Aspirin Example - Graduateway

Jan 07, 2018 Information is given on the hazards and risk assessment. Executive SummaryAim – To prepare a sample of Acetyl Salicylic Acid, more commonly known under the trade name as Aspirin. ... Turn the heating mantle on to number two setting, using the temperature controller to heat the components* Start the stop clock, gently heat the mixture, at 70oC ...

Useful Tips on safe use of laboratory heating devices ...

Jul 05, 2017 The common heating devices used in labs are bunsen burners, hot air ovens, hot plates, heating mantles, muffle furnaces, hot oil baths and microwave digestion systems. The selection of a device depends on the application in hand. Heating exposes you to burns and boils resulting from contact with hot surfaces, boiling liquids, vapours or flames.

Laboratory - Fire prevention - PREVOR

Mar 09, 2008 Keep away from heat, sparks, and sources of ignition. The small fire in the first example would not have happened if the ignition source had been properly controlled. The major fire in the second example was ignited by the transformer which powered the heating mantle. The transformer was in the hood immediately adjacent to the distillation ...

Levels and risk assessment of residual phthalates ...

Mar 21, 2022 The risk assessment conducted, showed an associated elevated cancer risk 10 −4 for PAHs in all samples and DEHP in samples NN, BB and SF. The risk associated with the levels of carcinogenic SVCOCs were found to be 10 -5 but 10 −4 .The hazard indices (HI) calculated for non-cancer effects, showed risk levels 1.0 for phthalates in most ...

Emission behavior environmental impact and priority ...

Nov 05, 2020 The VOCs were triggered by heating 50 g asphalt binder in a heating mantle to 175 C and then keeping for 0.5 h. During heat preservation, the asphalt was stirred at a constant rate of 300 r/min. ... Integrated risk assessment for agricultural drought and flood disasters based on entropy information diffusion theory in the middle and lower ...

Human health risk assessment of cyanide levels in water ...

Oct 26, 2017 The sample mixture in the round bottom flask was heated at a temperature of 100 C in a heating mantle for 1 h. The heating mantle was then turned off, the distillate cooled for 20 min, poured into a 250 mL volumetric flask and diluted to the mark with distilled water. ... Non-carcinogenic risk assessment of cyanide in different exposures ...

Levels and Health Risk Assessment of Heavy Metals in Soil ...

Risk assessment of heavy metal toxicity through contaminated vegetables from waste water irrigated area of Varanasi, India. By Fiona Marshall. Heavy Metals Accumulation In Amaranths (Amaranthus Hybridus) And Jews Mallow (Corchorus Olitorius) Grown on Soil Amended With Tannery Sludge From Challawa Industrial Area, Kano State Nigeria ...


SAFETY DATA SHEET According to JIS Z 7253:2012 Version 4.02 Revision Date 13-May-2019 Section 1: PRODUCT AND COMPANY IDENTIFICATION Product name Tollens Reagent Product code 204-06361 CAS RN N/A


Safety eyewear complying with an approved standard should be used when a risk assessment indicates this is necessary to avoid exposure to liquid splashes, mists, gases or dusts. If contact is possible, the following protection should be worn, unless the assessment indicates a higher degree of protection: safety glasses with side-shields.


SAMPLE RISK ASSESSMENT (inc COSHH) Money to Burn – For demonstration only Specific Generic Please tick Date: 02/04/15 Attach additional sheets if required at any section. Substances Involved and Hazards Identified: e.g. Biological*; Radioactive*; Toxic, Explosive, Inflammable, Carcinogenic Substance Hazard Ethanol Flammable. May be harmful by ...

Heating Mantles - Facilities Management

Start with the lowest power setting on the — 20-30% power is usually enough to cause most common organic liquids to reflux. A few examples of these are shown below: To prolong the life of your heating mantle, clean up spills (solid or liquid) right away. Except for the cord, mantles are not generally repairable.

Laboratory Hot Plate Safety - Research and Discovery

There is also the risk of burns from accidental contact with a hot surface. Basic Precautions: • Periodically test the function of the “off” switch on each hot plate, heating mantle, and water bath to verify that it works and the device cools quickly when the switch is in the “off” position.

Assessment of thermal safety during distillation of DMSO

This paper deals with the risk of distillations of unstable compounds. Distillations, especially when carried out under vacuum can be quite dangerous for different reasons: during normal operation there is a high power throughput through the mass to be distilled. Heat is put into the mass through the heating mantle, on the other hand heat is ...

Core practical 5: Investigate the oxidation of ethanol

To oxidise ethanol and use heating under reflux and distillation as practical technique s Safety Specification links r goggles Wea. Ethanol is flammable. Acidified sodium dichromate is an oxidising agent. It is both corrosive and a carcinogen – wear chemical-resistant gloves. Practical techniques 4, 7, 9, 11

Refluxing - SSERC

Turn on the water in the condenser. Start heating. You will soon see, as it starts to boil, that the vapour is condensing and falling back into the flask. It may be that you still lose a small amount of vapour. If this is the case, the flask can be replenished by simply adding more solvent in from the top. Continue for the time allocated in ...

Student safety sheets 68 Ethanal and higher aldehydes

Typical control measures to reduce risk • Wear eye protection and protective gloves (preferably nitrile). • Open ethanal bottles very cautiously in a fume cupboard, after cooling in an ice bath. • Avoid using ethanal if at all possible; use propanal or butanal instead.

Cyclohexene - Breckland Scientific

Where risk assessment shows it is necessary, use a dust mask type or breathing apparatus. 9.1 Information on basic physical and chemical properties State: Liquid Colour: Colourless Melting point oC: -104 Boiling point oC: 83 Relative density g/cm3: 0.811 Chemical formula: C₆H₁₀ Molecular weight g/mol: 82.15

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