The Safe Storage Of Laboratory Chemicals Environmental Sciences Essay

The program to hold a safe storage of laboratory chemical started in school twelvemonth 2005-2006 when the location of research lab chemicals was transferred at the dorsum of the Chemistry Instrumentation Room. The ground for the transportation is to insulate the chemical storage room for possible jobs in instance of spillage which emit bad olfactory property and exhausts.

In the school twelvemonth three ( 3 ) strong typhoons hit the topographic point one of which the Typhoon Reming which to a great extent devastated the topographic point including the university. For about two ( 2 ) months the university has no electricity. The old research lab chemical storage room is a little room with cabinets more than the highs of the module, technician and student helpers. An exhaust fan was usage to air out the topographic point. Lighting is really hapless and the usage of fluorescent lamp is needed when looking for chemicals. Because of this status the looking for chemical was so hard specially when there was no electricity.

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In the summer of 2007 a program to take the divider wall of the chemical storage and readying room was done to work out the bing job. Impermanent cabinets were constructed which is about the tallness of the module, technician and student helpers. Simultaneously, the program on which laboratory chemical storage system will be used was besides taking into consideration.

A research was conducted on the procedure on how to hold a safe research lab chemical system. Several surveies suggested that the demand to follow which storage system will be usage was the initial measure and the best manner to hive away chemical is base on compatibility.

During the procedure the demand of the Materials Safety Data Sheet ( MSDS ) of each chemical nowadays in the research lab and the possible consequences of the reaction was really of import in the segregations of the chemicals when stored harmonizing to compatibility. Several MSDS were downloaded utilizing several companies. The usage of different beginnings of MSDS was non good ; hence, a site which will give about MSDS of the chemical nowadays in the research lab was look into the cyberspace. The specific MSDS should be available so that when uncertainties arise refering chemical belongingss and associated jeopardies were encountered it can easy be consulted. The FLINN MSDS was found out to be concise and the categorization of the chemical was reflected.

Based on the FLINN MSDS the research lab chemicals were segregated harmonizing to household ( e.i. inorganic or organic ) and classified harmonizing to:

FLINN Scientific Suggested Chemical Storage Pattern

Inorganic

Organic

Metallic elements, Hydrides

1. Acids, Amino Acids, Anhydrides, Peracides

Acetate, Halides, Iodides, Sulfates. Sulfites, Thiosulfates, Phosphates, Halogens, Oxalates, Phthalates, Oleates

2. Alcohols, Glycols, Sugars, Amines, Amides, Imines, Imides

Amides, Nitrates ( except ammonium nitrate ) Nitrites, Azides

3. Hydrocarbons, Esters, Aldehydes, Oils

Hydroxides, Oxides, Silicates, Carbonates, Carbon

4. Quintessences, Ketones, Ketenes, Halogenated Hydrocarbons, Ethylene Oxide

Sulfides, Selenides, Phosphides, Carbides, Nitrides

5. Epoxy Compounds, Isocyanates

Chlorates, Bromates, Iodates, Chlorites, Hypochlorites, Perchlorates, Perchloric Acid, Peroxides, Hydrogen Peroxides

6. Hydrogen peroxides, Hydroperoxides, Azides

Arsenates, Cyanides, Cyanates

7. Sulfides, Polysulfides, Sulfoxides, Nitriles

Borates. Chromates, Manganese, Permanganates, Molybdates, Vanadates

8. Phenols, Cresols

Acid ( except Nitric Acid, stored nitiric acid on an isolated shelf by itself )

9. Dyes, Stains and Indexs

Sulfur, Phosphorus, Arsenic, Phosphorus Pentoxide

10. Organic Miscellaneous

Inorganic Miscellaneous

Using the FLINN MSDS ( Hazard Classification-Flinn-at-a-Glance ) the chemicals were classified harmonizing to jeopardy utilizing the undermentioned categorization:

NFPAsquare

Beginning: hypertext transfer protocol: //safety.science.tamu.edu/nfpa.html

Toxic stuffs

The wellness evaluation is intended to supply exigency response forces with an thought of the grade of danger posed by a specific stuff. It addresses merely issues related to acute, or short-run, exposures, and does non see the danger posed from chronic or long-run exposures. The disadvantage of this system is that it does non turn to exposure to carcinogenic or mutagenic stuffs. The criterion is concerned merely with exposure as related to respiratory or contact incidents, since consumption is an improbable scenario for fire combatants. A 3 or a 4 will be assigned to any stuff that is classified as “ Poison – Inhalation jeopardy ” by the DOT.

Flammable stuffs

The flammability evaluation is dependent upon the easiness of ignition of a stuff. Many stuffs will fire under one set of conditions but will non fire under any other status. The numeral values are assigned based on the flash point ( the lower limit temperature at which a liquid gives off vapour in sufficient concentrations to let the substance to light ) of the stuff. The flash point supplies utile information sing the grade of jeopardy. First, if the stuff has no flash point, it is non a flammable stuff. Second, if it has a flash point, it must be considered flammable or combustible. Besides, the flash point can be used as an indicant of susceptibleness of ignition – lower flash points indicate increased susceptibleness.

Reactive stuffs

The responsiveness evaluation measures a stuff ‘s susceptibleness to violent reaction – explosion, polymerisation, detonation, etc. The force of the reaction may be increased by add-on of heat or force per unit area, by mixture with other stuffs to organize fuel-oxidizer combinations, or by contact with incompatible substances or contaminations. Because of the complexness of these types of reactions it is non straightforward to utilize a simple numeral graduated table to place the grade of jeopardy. Rather these state of affairss affecting reactive stuffs must be evaluated separately. The numeral evaluation will be used to rank the easiness, rate and possible measure of energy that may be released.

* Water Reactives and Oxidizers – Particular Hazards

Materials which are remarkably reactive with H2O are denoted with a “ W ” with a cut through it. The figure in the xanthous box will so bespeak the grade of responsiveness.

Materials which are capable of increasing the strength of a fire by providing fuel during fire will be labeled with the fable “ OX ” in this subdivision of the diamond.

Beginning: hypertext transfer protocol: //safety.science.tamu.edu/nfpa.html

The grades of jeopardy were ranked harmonizing to the possible badness of the exposure as shown in the undermentioned tabular array.

Health Hazard

Fire Hazard

Reactivity Hazard

4

Materials which on really short exposure could do decease or major hurt, even with prompt medical attending

4

Materials which will quickly zap at atmospheric force per unit area and normal temperature, or which are readily dispersed in air and which will fire readily.

4

Materials which are readily capable of explosion or of explosive decomposition or reaction at normal temperature and force per unit area.

3

Materials which on short exposure could do decease or major hurt even though prompt medical intervention is given.

3

Liquids and solids that can be ignited under about all temperature degrees.

3

Materials which in themselves are capable of explosion or explosive reaction but require a strong initiating beginning or which must be heated under parturiency before induction or which react explosively with H2O.

2

Materials which on short exposure could do impermanent incapacitation or possible residuary hurt unless prompt medical intervention is given.

2

Materials that must be reasonably heated or exposed to comparatively high ambient temperatures before ignition can happen.

2

Materials which are usually unstable and readily undergo violent chemical alteration but do non explode. Besides stuffs which may respond violently with H2O or which may organize explosive mixture with H2O.

1

Materials which on exposure would do annoyance but merely minor residuary hurt, even if no intervention is given.

1

Materials that must be preheated before ignition can happen

1

Materials which are usually stable, but which can go unstable at elevated temperatures and force per unit areas or which may respond with H2O with some release of energy but non violently.

0

Materials which on exposure under fire would offer no jeopardy beyond that of ordinary combustible stuffs.

0

Materials that will non be burn.

0

Materials which are usually stable, even when exposed to, and which are non reactive with H2O.

Beginning: hypertext transfer protocol: //safety.science.tamu.edu/nfpa.html

To hold safe and efficient research lab chemical storage the usage of colour coded cabinets was used:

Cabinet Color

Categorization

Flammable: Storage of flammable reagents

Health Hazard for Inorganic Chemicals

Storage of chemicals which are toxic if inhaled, ingested, or absorbed through tegument

Health Hazard for Organic Chemicals

Reactive, Oxidising Agents and Corrosive: Storage of chemicals which act violently with air, H2O, or other substance, injury tegument, eyes, and mucose membrane.

Storage of no more than moderate jeopardy in any of classs antecedently mentioned.

Storage of non jeopardy chemicals and reagents or general purpose reagent.

Each cabinets use the suggested shelf storage form by FLINN Scientific.

FLINN Scientific Suggested Shelf-Storage Pattern – Inorganic

Inorganic 10. Sulfur, Phosphorus, Arsenic, Phosphorus Pentoxide

Avoid Using the Floor

Inorganic 7. Arsenates, Cyanides, Cyanates

Inorganic 2. Acetate, Halides, Iodides, Sulfates. Sulfites, Thiosulfates, Phosphates, Halogens, Oxalates, Phthalates, Oleates

Inorganic 5. Sulfides, Selenides, Phosphides, Carbides, Nitrides

Inorganic 3. Amides, Nitrates ( except ammonium nitrate ) Nitrites, Azides

Inorganic 8. Borates. Chromates, Manganese, Permanganates, Molybdates, Vanadates

Inorganic 1. Metallic elements, Hydrides

Inorganic 6. Chlorates, Bromates, Iodates, Chlorites, Hypochlorites, Perchlorates, Perchloric Acid, Peroxides, Hydrogen Peroxides

Inorganic 4. Hydroxides, Oxides, Silicates, Carbonates, Carbon

Inorganic Miscellaneous

FLINN Scientific Suggested Shelf-Storage Pattern – Inorganic

Organic 2. Alcohols, Glycols, Sugars, Amines, Amides, Imines, Imides

Avoid Usi

ng the Floor

Organic 8. Phenols, Cresols

Organic 3. Hydrocarbons, Esters, Aldehydes, Oils

Organic 6. Hydrogen peroxides, Hydroperoxides, Azides

Organic 4. Quintessences, Ketones, Ketenes, Halogenated Hydrocarbons, Ethylene Oxide

Organic 1. Acids, Amino Acids, Anhydrides, Peracides

Organic 5. Epoxy Compounds, Isocyanates

Organic 9. Dyes, Stains and Indexs

Organic 7. Sulfides, Polysulfides, Sulfoxides, Nitriles

Organic Miscellaneous

The concluding stock list of research lab chemicals was prepared per cabinet. To ease easy retrieval of research lab chemicals an Alphabetic List of Laboratory Chemicals was generated which contain the undermentioned information.

Chemical name

Chemical expression

IUPAC name

Other name/s

Cabinet colour and figure

Categorization

Based on the alphabetical listing of research lab chemicals an single stock list card was formulated to incorporate all the necessary information needed base on international protocol for chemical stock list. Aside from the storage of incompatible stuffs and jeopardies there are other recommendations for safe storage of chemicals in the research lab. The followers:

All containers of chemicals stored in the icebox have to be decently labeled.

A separate chemical storage room has to be provided to divide from chemicals from equipment, stuffs and supplies in the research lab.

The sum of chemicals that are stored in the chemical storage room should as specified by DENR-EMB regulative.

Chemicals larger than one-gallon have to be stored in a separate storage country.

Chemicals have to be stored at an appropriate temperature and humidness degree room particularly in hot and humid climes.

Avoid exposing chemicals into direct sunshine.

Have a everyday review of research lab chemicals and its container. The following are indicants for disposal.

cloud cover in liquids

stuff altering colour

grounds of liquids in solids or solids in liquids

beads of wet of stuff around or outside of the container

force per unit area build-up within bottle

obvious impairment of container

Lab cabinets have to hold __________________to prevent containers from falling.

The tallness of the cabinet should on eye-level of the users. Storage of glass containers should be given apace allowance of at least A? inches from each other to avoid touching with each other on the cabinet.

To minimise the flow of spill in instance the container interruption or cleft, trays or secondary containers have to be provided.

Round underside containers are susceptible for tipping ; therefore they have to be ever supported with cork rings or by other agencies.

Merely authorised forces are given entree to the chemical storage room.

Chemicals must ne’er be stored on the floor, even temporarily.

Chemicals that are no longer to be used based from the appraisal of the scientific discipline section or research should be decently disposed of or given to another research group necessitating the chemicals.

Flammable chemicals should be stored in dedicated detonation cogent evidence icebox which is within the chemical storage room. Before hive awaying flammable stuffs in the icebox they should be analyze foremost if maintaining such chilled chemicals will function any intent.

Peroxide formers ( i.e. , ether ) are non allowed to be stored in the icebox.

Periodic stock list of stuffs in the icebox is needed to avoid overcrowding with stuffs that have non been in used.

Clean the icebox at least twice a month so that chemicals may non go lock in the ice formations.

Routinely checked all chemicals stored in the icebox if they are tightly capped to avoid bluess that may interact with each other.

Shop chemicals in proper containers non in research lab wares with cork, gum elastic or glass stoppers because of the potency for leaking.

Fume goons should non be used as general storage countries for chemicals. This may earnestly damage the ventilating capacity of the goon.

Gas cylinders must be steadfastly belt to a lasting construction. Always see to it that cylinders are capped off.

Procurement, usage and disposal of all chemical must be decently documented.

Date of having and gap of plastic chemicals bottle should written on the bottle. Chemical label oftentimes degrades so it is advisable that the shelf-life/expiration day of the month should besides be included. For glass bottle it is advisable to glue a separate label on the bottle incorporating day of the month receives and unfastened, including the termination day of the month.

Each bottle of chemicals should be pasted with its jeopardy categorization as indicated by the colour of the cabinets while the compatibility categorization was either organic or inorganic with the corresponding figure to supply an instant usher to storage

Timeline of the Making of Safe Chemical Storage

School Year

1st semester

2nd semester

Summer

2007-2008

Planning of the redevelopment of the chemical storage room

Search on the Best Chemical Storage System

General Inventory of Laboratory Chemicals

Search for Material Safety Data Sheets

Renovation of the chemical storage room

2008-2009

Segregation of Laboratory Chemicals harmonizing to Family

Categorization of Laboratory Chemicals harmonizing to jeopardies

Puting the research lab chemicals into shelf utilizing the suggested FLINN Scientific Storage Pattern

Making Inventory of research lab chemicals per cabinet

2009-2010

Making the alphabetical listing of research lab chemicals

Revision of stock list per cabinets

Revision of alphabetical listing of chemicals

2010-2011

Searched for the IUPAC name and other name/s of research lab chemicals

Revision of stock list per cabinets

Revision of alphabetical listing of chemicals

2011-2012

Revision of the stock list per cabinets and alphabetical listing of research lab chemicals

Finalization of the stock list

Encoding of the single stock list of the research lab chemicals in the chemical stock list cards.

2012-2013

Submission to the finance division for concluding stock list

Revision if needed

End products:

Inventory of Laboratory Chemical per Cabinets – done

Alphabetic Listing of research lab Chemicals – done

Encoding of Individual Inventory of Laboratory Chemicals – non done ( hopefully this summer 2012 )

Printing of Individual Inventory of Laboratory Chemicals – non done ( hopefully this 1st sem, s.y. 2012-2013 )

x

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