CHEMICALS
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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 | 30 | 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 | 40 | 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. |
| Ethanol (Industrial Grade) | 45 | Acidity, Aldehydes, Anorganic Chloride, Appearance, Density @20oC, Ester Content, Electrical Conductivity, Nonvolatile Matter, Permanganate time test @15oC, Total Sulpur, Total Nitrogen, Water, Calcium, Potassium, Purity as received and purity on dry basis, Methanol, Aceton, Benzene, n-Propanol, iso-propanol, n-Butanol, iso-Butanol, n-Pentanol, Amylalcohol (n- + Iso-), Higher alcohols and Unknown impurities. |
| Bioethanol (Fuel Ethanol) | 45 | Density @20oC, Acidity, Aldehyd content, Appearance, Electrical conductivity, Ester content, Gum, Methanol, Organic Chloride, Permanganate time, pHe, Total Nitrogen, Total Sulfur, Water (coulometric), Water (titrimetric), Calcium and Potassium. |
| 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 | 70 | 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 | 60 | 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 | 50 | 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. |
| Polyether polyols (diols/triols) | 20 | Acid Number, Hydroxyl Number, Colour Pt/Co, Acidity, Water, Viscosity @ 37.7 °C (100°F) and pH. |
| Propylene oxide | 15 | Colour Pt-Co, Water, Density @20ºC, Acidity, Non volatile residue, Aldehydes, GC assay and GC impurities (Propene, Propane, Ethylene oxide, Methanol, Acetone, Butanol (n- and t-). |
| 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 | 30 | Benzene, Toluene, Ethylbenzene, p-Xylene, m-Xylene, o-Xylene, sum p-& m-Xylene, Cumene, sum of C9+ aromatics and sum of non aromatics. |
| VAM | 15 | Acidity, Purity, Methylacetate, Ethylacetate, Acetone, Acetaldehyde, Benzene, Inhibitor, Density @20°C, Distillation (ibp, mbp, fbp, range) and Water. |
| MDI | 15 | Appearance, Density @15°C, SG 25/25°C, isocyanate content, isocyanate equivalence, viscosity @25°C, hydrochloric acid. |
| MMA | 15 | Appearance, colour Pt-Co, Density @20°C, water, acidity, inhibitor and purity (impurities methanol, acetone, methylacrylate, methylisobutyrate and ethylmethacrylate). |
| Phenol | 15 | ASTM D2439 profile: Water, solidification point, appearance, molten colour and purity. |