CHEMICALS

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Proficiency testing schemes for Petroleum and Petrochemical Products: Chemicals

Product No. of labs Provisional scope
Acetic Acid 30 Acetaldehyde, Colour Pt/Co, Chloride, Density @20oC, Formic acid, Freezing point, Heavy Metals as Pb, Iron, Non Volatile Matter, Purity (calculated from freezing point), Purity (calculated from titration), Sulphate and Water.
Acetone 25 ASTM D329 profile; Acidity, Aldehydes, Alkalinity, Appearance, Anorganic Chloride, Colour Pt-Co, Density @20oC, Distillation range, Miscibility (water), Nonvolatile Matter, Purity on dry basis, Diacetonalcohol, Mesityloxide, Permanganate Time Test, Refractive Index and Water.
Benzene 40 ASTM D2359 profile: Acid wash colour, Acidity, Appearance, Bromine Index, Colour Pt/Co, (relative) Density @20oC, Distillation range (IBP, MBP and dry point), Total Chlorine, Total Nitrogen, Solidification point, Toluene, Non Aromatics Hydrocarbons and Purity.
 Toluene 25 ASTM D841 profile: Acid wash colour, Appearance, Copper corrosion, Colour Pt/Co, Density @20oC, Distillation (IBP, MBP and Dry point), Non Aromatics Hydrocarbons, Styrene and Purity.
n-Butylacrylate 25 Acidity, Colour Pt-Co, Density @20°C, MEHQ, Water, Purity (by GLC and on dry basis), n-Butanol, n-Butylacetate, n-Butylmetacrylate, n-Butyl-propionate, Di-n-butylether, 2-Ethylhexylacrylate and Isobutylacrylate.
Fuel- / Bio-ethanol 45 Acidity, Appearance, Copper, Density @ 20oC,Electrical conductivity at 25oC Inorganic Chloride, Involatile material content, Nitrogen, Phosphorus, Sulfate, Total sulfur, Water (coulometric), Water (titrimetric), Ethanol, Acetaldehyde, Acetal (1,1-diethoxyethane), Acetone, Benzene, Cyclohexane, Crotonaldehyde, DEG (di-ethylene glycol), Dioxane, Ethylacetate, Iso Butanol, Iso Propanol, MEG (mono-ethylene glycol), Methanol, 3-Methyl-1-Butanol, 2-Methyl-1-Butanol, n-Amylalcohol, n-Butanol, n-Propanol, sec-Amylalcohol, sec-Butanol, tert-Amylalcohol and tert-Butanol
Ethanol (REN, Food Grade) 45 Density @20oC, Water, Purity at dry basis, Strength (in %V/V and %M/M), UV Transmittance.
Isopropyl alcohol 25 Acidity, Anorganic Chloride, Appearance, Apparent Density @20°C, Density @20°C, Colour Pt-Co, Distillation range, Nonvolatile Matter (NVM), Water, Purity and Purity on dry basis, Ethanol, nPropylbenzene, other alcohols and Methyl Ethyl Ketone (MEK).
MEG-fg 60 Acidity, Ash, Chloride, Colour Pt/Co, Di ethylene glycol (DEG), Density @20°C, Distillation @ 760 mmHg (IBP, DP and range), Free aldehydes, Iron, Purity on dry basis, Specific gravity 20/20, UV transmittance (220, 250, 275 and 350 nm) and Water.
Methanol 80 IMPCA specs: Acidity, Appearance, Carbonisable substances (Pt-Co scale),Chloride, Colour Pt/Co, Distillation (IBP, DP and range), Density @20oC & Specific gravity 20/20, Hydrocarbons, Non volatile matter, Permanganate time test @15oC, Sulphur, Total iron,Water Miscibility, Water (titrimetric and coulometric),Purity (on dry basis), Ethanol and Trimethylamine.
Methanol 40 UV (300nm, 268.5nm, 250nm and 220nm)
MTBE 25 Colour Pt/Co, Density @15oC, Refractive Index 20oC, Water, Purity as received, Purity on dry basis and some GC- impurities: Diisobutylenes, Methanol, Tert-butanol, C4-, C5- and other Hydrocarbons.
ETBE 25 Density @15 oC, Sulfur, Water, Nitrogen, Purity as received, Purity on dry basis and some GC- impurities: Diisobutylenes, Ethanol, Tert-butanol, MTBE, C4-, C5- and other Hydrocarbons.
Propylene glycol 20 Acidity, Chloride, Colour Pt-Co, Distillation range, Iron, GC purity, DPG, Density @ 20oC, Specific gravity 20/20 and Water.
Styrene 35 Purity on dry basis, Colour Pt/Co, Aldehydes, Peroxides, Sulphur, Polymers, Inhibitor and Impurities: Benzene, Ethylbenzene, m+p-Xylenes, Cumene, o-Xylene, n-Propylbenzene, m+p-Ethyltoluenes, alpha-Methylstyrene, Phenylacetylene, Benzaldehyde and Non aromatics.
o-/p-Xylenes 30 ASTM D5136 profile on p-Xylene: Purity, Non aromatics, Toluene, Ethylbenzene, m-Xylene, o-Xylene, Appearance, Colour Pt/Co, Distillation (IBP, DP and range), Organic Chloride and Sulphur. On o-Xylene: Purity, Non Aromatics, Benzene, Toluene, p-Xylene, m-Xylene, Ethylbenzene, Styrene, Cumene, Ethyltoluenes (sum), n-Propylbenzene and C9 and heavier aromatics.
Mixed-Xylenes 35 Benzene, Toluene, Ethylbenzene, p-Xylene, m-Xylene, o-Xylene, sum p-& m-Xylene, Cumene, sum of C9+ aromatics and sum of non aromatics.
VAM 25 Acidity, Purity, Methylacetate, Ethylacetate, Acetone, Acetaldehyde, Benzene, Inhibitor, Density @20°C, Distillation (ibp, mbp, fbp, range) and Water.
MMA 15 Appearance, colour Pt-Co, Density @20°C, water, acidity, inhibitor and purity (impurities methanol, acetone, methylacrylate, methylisobutyrate and ethylmethacrylate).