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There are thousands of known chemicals. It is not practical to assess chemical resistance of Velstone Laboratory Tops against all chemicals. It is recommended to test a piece of Velstone for a specific use. The reactivity with chemicals depends upon the concentration of the chemical, temperature of the chemical and the exposure time. The following is a list of some substances commonly encountered in school, college laboratories and in households. The effect they may have on Velstone Laboratory Tops in case of accidental spillage or short time exposure is listed.

The effect of the chemicals in lists A, B, & C can be removed and the surface appearance restored by cleaning with household cleaners and water or abrasive cleaning powder (AJAX or similar) and Scotch-Brite pad.

The effect of the chemicals in list D can be removed and the surface appearance restored by sanding.

acetylsalycylic acid

acid alcohol<:p>

agar

alkylbenzene hydrocarbon

aluminium powder coarse

aluminium powder fine

aluminium ammonium sulphate

aluminium carbonate

aluminium chloride anhydrous

aluminium chloride-6-water

aluminium nitrate-9-water

aluminium oxide - calcined

aluminium potassium sulphate

aluminium sulphate-n6-water

amberlyst resin acidic

amberlyst resin basic

aminopenicillanic acid(6)

ammonium bromide

ammonium carbonate powder

ammonium cerium (iv) sulphate

amonium chloride

ammonium copper (ii) chloride

ammonium dichromate (vi)

ammonium ethanedioate

ammonium ethanoate

ammonium iodide

ammonium iron (ii) sulphate-6-water

ammonium iron (iii) sulphate

ammonium metavanadate

ammonium methanoate

ammonium molybdate

ammonium nickel (ii) sulphate

ammonium nitrate

ammonium peroxodisulphate (vi)

ammonium sulphate

ammonium sulphide

ammonium thiocyanate

anti-bumping granules

aspartic acid

aspirin tablets

barium

barium bromide

barium carbonate

barium chloride-2-water

barium diphenylamine sulphonate (4)

barium hydroxide-8-water

barium nitrate

barium peroxide

barium sulphate

barium thiosulphate

benzene

benzenedicarboxilic acid 1,2

benzenedicarboxylic 1,2

benzenediol -1-4

benzenetriol 1,2,3

benzoic acid

bismuth (iii) chloride

bismuth nitrate

blood

boric acid

bromosuccinamide

buffer tablets ph 4

buffer tablets ph 7

buffer tablets ph 9

butandioic acid

butanoic acid

butanol-1-

butanol-2-

butanone

cadmium sulphate

caffeine

calcium turnings

calcium bromide

calcium carbide

calcium carbonate

calcium chloride

calcium chloride-6-water

calcium ethanedioate

calcium ethanoate

calcium flouride

calcium hydride 85.9%

calcium hydroxide

calcium methanoate

calcium nitrate-4-water

calcium oxide

calcium sulphate-2-water

calcium sulphide

camphor

carbon disulphide

castor oil

cedarwood oil

cement

chloroacetic acid

chromium (iii) chloride

chromium (iii) potassium sulphate

chromium (iii) sulphate

cigarette (Nicotine)

cobalt (ii) chloride-6-water

cobalt sulphate-7-water

coffee

copper foil 0.1 mm

copper powder

copper turnings

copper (i) chloride

copper (i) oxide

copper (ii) bromide

copper (ii) carbonate

copper (ii) chloride-2-water

copper (ii) chromate (vi)

copper (ii) ethanedioate

copper (ii) ethanoate

copper (ii) nitrate

copper (ii) oxide-powder

copper (ii) oxide-wire form

copper (ii) sulphate-5-water

copper ore

crown ether 18-6

cyclohexane

cyclohexanol

cyclohexene

d.n.p. soln (2,4)

decanediol chloride

devarda’s alloy

diaminoethane (1,2,-)

diaminoethanetetra acetic acid

diaminohexane (1,6-)

dibutylbenzene-1′2-dicarboxylate

dichloroethane

dichloroethanoic acid

dichloromethane

dichlorophenolindophenol

didodecanoylperoxide

diethylaminomethylcoumarin (7-4)

diethylethandioate

dihydroxybenzene (1,2-)

dihydroxybutanedioic acid (2,3)

dimethyldichlorosilane

dimethylethandioate

dimethylglyoxime

dinitrophenylhydrazine (2,4-)

diphenylamine

dodecan-1-ol

dutch metal leaf

ethanamide

ethanedioic acid

ethanediol (1,2-)

ethanol

ethanoyl chloride

ethoxyethane

ethoxyethanol (2-)

ethyl benzoate

ethyl ethanoate

ethyl methanoate

ethylaminobenzoate 4

ethylammonium hydrochloride

fehlings solution no.1

fehlings solution no.2

glucose

guar gum

heptane

hexane

hexanol-1

hexene-1

hydrogen-gas

hydrogen peroxide

hydrogen sulphide-aqueous

hydroxibenzoic acid-2

hydroxybutanedioic acid (2)

hydroxy-dinitrobenzoic acid (2-3,5)

hydroxyl ammonium chloride

hydroxypropane 1,2,3-

indicator papers-blue

indicator papers-la

indicator papers-red

indicator papers-si

indicator papers-uni

iodine soln in ki

iodine water

iodobutane

iodoethane

iodomethane

iodomethylpropane (2-2)

iron filings coarse

iron filings fine

iron reduced by hydrogen

iron (ii) carbonate

iron (ii) ethanedioate

iron (ii) ethanoate

iron (ii) sulphate

iron (ii) sulphide

iron (ii) chloride

iron (ii) chloride-anhydrous

iron (ii) nitrate

iron (ii) oxide

iron (ii) sulphate-monsels

iron (ii) sulphate-technical

iron nail

iron sulphate tablets

ketchup

l-ascorbic acid

lead foil-0.15mm

lead shot

lead (ii) 2,3-hydroxybutanedioate

lead (ii) bromide

lead (ii) carbonate

lead (ii) chloride

lead (ii) ethanoate

lead (ii) nitrate

lead (ii) oxide

lead ( ii ) sulphide

lead ( iv ) oxide

lead tetroxide ( tri )

limonene

liquid paraffin

lithium chloride

litmus solid

litmus solution

lycopodium powder

magnesium powder

magnesium ribbon

magnesium carbonate-light

magnesium chloride

magnesium chloride-anhydrous

magnesium hydroxide

magnesium nitrate

magnesium oxide heavy

magnesium oxide light

magnesium sulphate

magnesium sulphate

manganese (iv) oxide

manganese carbonate

manganese chloride

manganese ethandioate

manganese ethanoate

manganese sulphate

marble chips large

marble chips small

mercury (ii) chloride

mercury (ii) nitrate

mercury (ii) oxide

methanol

methyl benzoate

methyl hydroxybenzoate

methylaminophenolsulphate 4

methylammonium chloride

methylbenzene

methylbutane(2-)

methylbutanol (2-2)

methylbutylethanoate (3-)

methylmethanoate

methylpropanol(2-1)

methylpropanol(2-2)

milk

mineral oil

molybdenum trioxide

mustard

napthol (2-)

needles hypodermic

nickel metal foil

nickel (ii) carbonate

nickel (ii) chloride

nickel (ii) methanoate

nickel (ii) sulphate

octanoic acid

octanol-1

octanol 2

oleic acid

oxygen gas

paraffin

pentanal

pentane

pentanol-1

pentanol-2

pentanone-3

perspex

petroleum crude

petroleum ether 40/60

petroleum ether 80/100

petroleum jelly

petroleum unleaded

ph10 buffer

ph4 buffer

ph7 buffer

phenantroline (1,10)

phenolpthalein

pheoxyethanoic acid

phenylammonium chloride

phenylbenzoate(prepared)

phenylethanol (2-)

phenylethanone

phenylethene

phenylhydroxybenzoate-2

phenylmethanol

phenylproponal(3)

phenylpropanoic acid (3-)

phosphoric acid crystals

phosphorus yellow

phosphorus pentachloride

polyvinylalcohol

potassium bromate (v)

potassium bromide

potassium carbonate

potassium chlorate (v) ar

potassium chloride

potassium dihydrogen phosphate

potassium ethandioate

potassium ethanoate

potassium hydrogen carbonate

potassium hydrogen ethanedioate

potassium hydrogen phosphate

potassium iodate (v)

potassium iodate (vii)

potassium iodide

potassium manganate (vii)

potassium nitrate

potassium nitrite

potassium peroxodisulphate (vi)

potassium sodium tartrate

potassium sulphate

potassium thiocyanate

propandiol-1-2

propanol-1

propanol-2

propanone

propantriol-1-2,3

pyrrole

salicylaldehyde

silica gell

silicon fused

silicon (iv) chloride

silicon (iv) oxide

silver foil

silver chloride

silver nitrate

soap

soda lime large

soda lime small

sodium benzene caboxylate

sodium benzene sulphonate

sodium bismuthate

sodium bromate

sodium bromide

sodium carbonate a.r.

sodium carbonate-10 water

sodium carbonate-anhydrous

sodium chloride

sodium chloride-rock salt

sodium cobalt nitrite

sodium dihydrogen

sodium diphenylamine sulphonate (4)

sodium ethanedioate

sodium ethanoate-3water

sodium ethanoate anhydrous

sodium ethanoate -fused

sodium fluoride

sodium hydrogen carbonate

sodium hydrogen orthophosphate

sodium hydrogen sulphate a.r.

sodium hydrogen sulphate-1-water

sodium hydrogen sulphite

sodium hydroxybenzoate (2)

sodium iodate

sodium iodide

sodium meta bisulphate

sodium methanoate

sodium nitrate

sodium nitrite

sodium nitroprusside

sodium sesqui-carbonate

sodium silicate

sodium stearate

sodium sulphate anhydrous

sodium sulphate -10-water

sodium sulphide

sodium sulphite anhydrous

sodium sulphite-7-water

sodium tetra borate

sodium tetraoxodisulphate

sodium thiosulphate

soy sauce

starch

steel

strontium carbonate

strontium chloride

strontium nitrate

sucrose

sugar

sulphur roll

sulphur dioxide-aqueous

sulphur dioxide-gas

talcum

tea

tetra chloro methane

tetra ethyl orthosilicate

thiourea

thymol

tin foil

tin granulated

tin (ii) chloride

tin (ii) oxide

tin (iv) chloride anhyd.

tin (iv)chloride-5-water

tin (iv) oxide

tolunesulphonicacid-na salt

trichloro acetic acid

triethanolamine

tungsten metal powder

universal indicator

universal indicator f.r.

urea

vanadium pentoxide

vaseline

vinegar

water

yeast dried

zinc foil

zinc granulated

zinc powder

zinc bromide

zinc carbonate

zinc chloride

zinc ethanoate

zinc nitrate

zinc oxide

zinc sulphate

zinc sulphide

acid blue 40

alkaline 2-napthol

aminobenzoic acid (2-)

aminobutandioic acid

aminoethanoic acid

amino-hydroxybenzene (4-1)

aminophthaloylhydrazine (3-)

ammonia/ammonium chloride buffer

bromine in cyclohexane

bromine in trichloroethane

bromine water

bromomethylpropane (2-2)

bromophenol blue

bromothymol blue

charcoal activated

chlorine-gas

congo red

fast sulphon black f

fluorescein sodium salt

food colouring

graphite powder

hydroiodic acid

iodine

methnoic acid

methyl orange

methyl orange-screened solution

methyl red

methylene blue

ninhydrin

patton & reeders reagent

phenol red

phenylammonium chloride stain

phosphoric acid (v)

phosphorus (iii) chloride

potassium chromate (vi)

potassium dichromate (vi)

potassium hexacyanoferrate (ii)

potassium hexacyanoferrate (iii)

procion red mx5b

rhodamine b

sodium chromate

sodium dichromate

sodium hypochlorite solution

sulphanilic acid

trichloroethane (1,1,1,)

trichloroethylene

trichloromethane

aminosulphonic acid

ammonia solution

benzaldehyde

benzenediamine 1,3

benzenediamine 1,4

benzoyl chloride

benzyl chloride

bromobenzene

bromobutane (1-)

bromobutane (2-)

bromocresol green

butanal

butylamine

chlorine-aqueous

chloromethyl propane (2-2)

cresol-m

cresol-p

cyclohexanone

diethylamine

dimethylbenzene

direct red 23

disperse yellow 7

durazol red 2b

erichrome black

ethanal

ethanoic acid

ethanoic anhydride

ethyl amine

hair dyes

hydrochloric acid

ink

lipstick

lithium metal

mercaptoacetic acid

methanal

methylmethylpropenoate (2)

methylpentanone (4-2)

nail polish remover

nitric acid

pencil lead

phenylalanine

phenylamine

phosphorous acid crystals

phosphorus red

phosphorus (v) oxide

potassium metal

propanal

propandioic acid

propionic acid

sodium metal

sodium hydroxide flake

sodium hydroxide pearl

sodium hydroxide pellet

sodium hydroxide powder

sulphuric acid

triethylamine

urine

bromine

chlorobenzene

chlorbutane (1-)

chlorbutane (2-)

nitrobenzene

nitrophenol (2-)

nitrophenol (4-)

phenol

potassium hydroxide

sulphur dichloride (di)

thionyl chloride

If you wish to carry out your own tests for specific Chemicals please do not hesitate to contact us and we will send you an appropriate size Velstone sample for testing.

The effect of chemicals is normally determined by a combination of visual Inspection, change in weight, reduction in hardness and changes in flexural properties. The effect of chemicals can be, none, superficial on the surface (colour change, stain, whitening or chalking), deeper penetration and softening. The damage is considered permanent if the material has softened or flexural properties have diminished or the surface of the Laboratory top can not be restored. The ratings are for accidental spillage or short period of exposure or contact. It is recommended that the spillage should be cleaned immediately using recommended methods and long term contact be avoided.