Density: 20°C : 1,19 (that of glass is approx. 2,7)

Water absorption: 0,25 – 0,30% after 24 hours at 20°C; max. 0,5% after 7 daysImpermeability: Policril tubes are completely waterproof and allow the convey of liquids with high vapour pressure and gas.

Weather resistance: Policril tubes do not suffer ageing, they are not affected by sudden changes in temperature, they do not crack or deform.

Exposure to UV rays: no effect is visible after 500 hours.


Tensile strength: 55-70 MPa (exceeds 90 at –40°C; decreases to 40 at +40°C)

Compressive yield stress: 70 – 90 MPa (exceeds 170 at –40°C, decreases to 30 at +40°C)

Brinell hardness: 17,9 with a 5mm sphere of weight 250kg in 3”

Moh’s hardness: 2 +/- 3 (madreperla 3, glass 6)

Modulus of elasticity: 2850 MPa


Vicat softening temperature: 95 – 105°C

Coefficient of linear expansion: 90·10-6/°C (at 20°C)

Specific heat: 1,5 W/mK

Thermal conductivity: 0,19 W/mK


Refractive Index nD20: 1.493 at 20°C (sodium line)

Transmittance: for a thickness of 5mm –

  1. a) in the visible spectrum: superior to 92%, the loss is almost entirely due to the reflection of the surfaces.
  2. b) In the ultraviolet range: better than that of glass and precisely:


302 27%

312 57%

314 60%

317 62%

328 64%

340 76%

N.B. : “ Policril S.a.s.” absolutely the first one in Europe tecnologically speaking in its field, is actually able to propose the complete range of acrylic cast tubes (PMMA) without any overprice in the new type “UV adsorber”, increasing and mantaining in the years the brillance characteristics of the product. On request, at the same price, used up the reserves of finish products in stock, for particular appliances (expecially in the medical field). it will be available the traditional product.

Quality and innovation, our claim to be always in the van!

  1. c) in the infrared range: good permeability except for absorbent rays in the frequencies 1200, 1400, 1700 Nanometers.


Policril tubes significantly deaden sound waves and can be utilised as a transparent sound proofing material.


The resistance to internal pressure is related to the internal diameter, to the wall thickness and the temperature. It appears therefore evident that the thickness tolerance of the walls plays an important part and it is for this reason that it is always specified and respected.

The resistance to internal pressure decreases as the temperature increases and vice versa. In practice, it has been found that it is sufficient to consider the admissible pressure equivalent to 1/5 or 1/6 of the theoretical explosion value which can be calculated using the formula:

P =  2 SK / D

Where:  is the explosion pressure in MPa S is the thickness of the wall in mm.

is the tensile strength of the material in MPa (in our case at 20°C 56-70 Mpa)

is the internal diameter in mm, therefore the formula can also be expressed in the following way:

kg/cm  =  wall thickness x 110 / internal diameter


The solvents of Poilicril tubes are:

  • methyl methacrylate monomer
  • chlorinated hydrocarbons for example; ethylene chloride, methyl chloride, methylamine chloride, chloroform
  • other chlorine derivatives such as carbon tetrachloride, trichloroethylenes are also solvents but not as effective as the previous listed; aromatic hydrocarbons such as benzene, toluene, xilol, etc ; aldehydes and ketones such as acetone and methyl-ethyl-ketone, acetic acid esters, ethyl acetate, butanol etc; methanol, ethanol, and butanol  are solvents but only with heat, ethanol provokes swelling of the material.

Non oxidant acids and strong alkalis do not create major reactions, in general:

Acetic acid has no effect up to 20% concentration at 20°C

Nitric acid has non effect up to 10% concentration at 40°C

Acid solution for lead batteries has no effect

Butyric acid attacks if the concentration exceeds 20% at 20°C

Chloric acid attacks if the concentration exceeds 20% at 20°C

Citric acid attacks if the concentration exceeds 20% at 20°C

Chromic acid attacks if the solution exceeds 40% of CRO

Fluoride acid lightly attacks

Formic acid has non effect up to 25% concentration at 20°C

Lactic acid has non effect up to 20% concentration at 20°C

Oxalic acid has non effect up to 10% concentration at 20°C

Phosphorus acid has non effect up to 50% concentration at 20°C

Sulphuric acid has non effect up to 25% concentration even at 60°C

Tartaric acid  has non effect up to 20% concentration even at 20°C

Alkalis:     Ammonia has non effect in solution up to 25%

Potassium idroxide has no effect cold, with heat has no effect in solution up to 25%

Caustic soda has no effect cold, with heat has no effect in solution up to 25%

Other chemical products, apart from those already listed, behave in different ways:

  • Sodium alluminate has no effect
  • Acetic anhydride attacks
  • Aniline attacks
  • Sodium bichromate has no effect up to 40% concentration
  • Sodium bisulphate has no effect up to 20% concentration
  • Sodium carbonate has no effect
  • Ammonium chloride has no effect
  • Benzylchloride attacks
  • Mercury chloride attacks
  • Cyclohexane attacks
  • Cyclopropane attacks
  • Turpentine substitutes and methylated spirits attacks
  • Hydrogen peroxide has no effect at 20% concentration
  • Salt water has no effect
  • petrol slightly attacks if it contains benzole or tetraethylead
  • ether attacks
  • Triethylamine attacks
  • Petrol ether has no effect
  • Gelatine has no effect
  • Glycol has no effect
  • normal or detergent motor oil has no effect
  • Lockeed break oil attacks
  • Coconut oil has no effect
  • Olive oil has no effect
  • Transformer oil has no effect
  • Calcium hypochlorite has no effect
  • Sodium hypochlorite has no effect up to 40% concentration
  • Potassium iodate has no effect
  • Fruit juices have no effect if they do not contain alcohol
  • Butyl lactate has no effect
  • Ethyl lactate has no effect
  • Milk has no effect
  • Lanolin has no effect
  • Mercury has no effect
  • Mercury chromate leaves a slight  rose coloured stain
  • Sodium metaphosphate has no effect
  • Metatoluidine attacks
  • Methylamine has no effect
  • Nafta American solvent has no effect
  • Nicotine attacks
  • Ammonium nitrate has no effect
  • Nitrobenzene attacks
  • Sodium Oleate has no effect
  • Medical paraffin has no effect
  • Phenol attacks
  • Bi and tri sodium phosphate have no effect
  • Butyl stearate has no effect
  • Iron sulphate does not attack, but slightly stains
  • Ethyl sulphate attacks
  • Copper sulphate attacks
  • Tincture of iodine attacks

Gas and vapours generally do not have any effect with the exception of  Sulphuric anhydride.

Tests conducted at 20°C and 65% u.r.
RR = Resists completely; RM = average resistance; NR = not resist
Boric acid RR
Hydrochloric acid up to 40% RR Manganese sulphate RR
Chromic acid up to 40% RR Mercury sulphate RM
Chloro sulphuric acid RR Nickel sulphate RR
Hydrofluoric Acid up to 40% RM Potassium bicarbonate RR
Phosphoric acid up to 30% RR Potassium dichromate RR
Nitric acid up to 20% RM Potassium carbonate RR
Concentrated nitric acid NR Potassium cyanide RR
Sulphuric acid up to 40% RR Potassium ferricyanide RR
Sulphuric acid up to 80% RM Potassium nitrate RR
Sulfuric acid to 1% RR Potassium permanganate RR
Acid accumulators RR Potassium sulphite RR
Potassium sulphate RR
ALKALIS Copper chloride RR
Ammonium RR Copper sulphate RR
Barium hydroxide, saturated solution RR Silicon tetrachloride NR
Potassium carbonate, saturated solution RM Sodium bisulfite RR
Sodium carbonate, saturated solution RM Sodium cyanide RR
Milk of lime RR Sodium chlorate RR
Potassium hydroxide solution, any concentration RM Sodium chloride RR
Caustic soda, any concentration RM Sodium fluoride RR
Soap solution RR Sodium phosphate RM
Sodium hypochlorite RM
Chlorine Water RR Sodium sulfate RR
Hydrogen peroxide 40 volumes RR Sodium sulfide RR
Hydrogen peroxide 120 volumes NR Tin chloride (dare) RR
Aluminium chloride RR Tin chloride (ico​​) RR
Aluminium fluoride RM Tin sulfate (ico​​) RR
Aluminium oxalate RR Zinc sulphate RR
Aluminum sulfate RR Zinc chloride RR
Aluminium Rock RR Zolfo RR
Ammonium carbonate RR
Ammonium chloride RR ORGANIC ACID
Ammonium phosphate RR
Ammonium nitrate RR Concentrated acetic acid NR
Ammonium sulphate RR Acetic acid up to 10% RR
Silver nitrate RR Butyric acid up to 5% RR
Barium chloride RR Formic acid NR
Barium sulfide RR Formic acid up to 2% RR
Calcium chloride RR Lactic acid 10% RR
Calcium hypochlorite RM Oxalic acid RR
Liquid chlorine NR Picric acid to 1% in water RR
Chlorine sulfuryl NR Stearic acid RR
Iron chloride (ico​​) RR Tartaric acid up to 20% RR
Iron chloride (dare) RR Thioglycolic acid up to 10% RM
Iron sulfate (dare) RR Trichloroacetic acid NR
Magnesium chloride RR
Magnesium sulfate RR
Amyl acetate NR
Acetato di amile NR Turpentine RR
Acetone NR Trichloroethylene NR
Allilic alcohol NR Tricresylphosphonate NR
Amyl alcohol NR Triethylamine RR
Butanol NR Xylene NR
Ethyl alcohol up to 20% RR
Anhydrous ethyl alcohol NR GAS
Isopropyl alcohol NR
Methyl alcohol NR Ammonium RR
Propyl alcohol NR Carbon dioxide RR
Acetaldehyde NR Pentoxide RR
Acetic anhydride NR Sulphur dioxide RR
Formaldehyde RR Nitrogen dioxide RR
Aniline NR Coal gas RR
Gasoline RM Hydrogen sulphide RR
Benzol NR Methane RR
Ethyl bromide NR Carbon monoxide RR
Ethyl butyrate NR Oxygen RR
Chlorophenol NR Ozone RR
Chloroform NR Bromine vapor RM
Ethyl Chloride NR Chlorine fumes RM
Jet fuel RM
Decalina RR
Diacetonalcool NR Vinegar RR
Dioxane NR Water RR
Ethylene Bromide NR Mineral water RR
Dioctyl phthalate RM Anise RR
Heptane RR Beer RR
Esalina RR Coffee RR
Hexane RR Cinnamon RR
Etilcloroetere NR Chocolate RR
Light petroleum RR Onion RR
Phenol NR Chamomile extract RR
Ethyl ether NR Bay leaves RR
Phthalate diamilico RM Carnations NR
Dibutyl phthalate NR Milk RR
Glycerin RR Spirit NR
Diethylene Clicol RR Nutmeg RR
Ethylene glycol RR Pepper RR
Butyl lactate NR Cider RR
Methyl ethyl ketone NR Fruit juices RR
Monobromo mothballs RR Wine RR
Naphthalene RR
Propylene NR
Carbon disulphide NR Fatty acids, refining RR
Tetrachloroethane NR Wax floors RM
Tetrachloroethylene NR Diesel oil RR
Carbon tetrachloride NR Oils and fats RR
Tetrahydrofuran NR Mineral oils RR
Tetralin NR Mineral fats and oils RR
Toluene NR Transformer oil RR
Hydrogen peroxide 100 volumes RR Alcohol up to 20% RR
Carbolic acid NR Alcohol anhydrous NR
DDT RM Pure gasoline NR
Formal RR Chlorine bleach (sodium hypochlorite, sodium sol.22) RR
Chloroamine paste NR Chlorinated solvent-based stain remover NR
Lime chloride paste RR Aqueous solution of ammonia RR
Spirit (denatured ethanol) NR
Up to 2% chloramine solution RR
Solution of calcium chloride up to 2% RR
Corrosive sublimate RR