Only METHOCEL Premium products can be used in controlled-release formulations (see the following table). Typical products used in controlled release include METHOCEL K100 Premium LV CR, K4M Premium CR, K15M Premium CR, K100M Premium CR, E4M Premium CR, and E10M Premium CR. The table lists the typical properties of METHOCEL Premium products generally used for controlled release. The physical form of these products is an off-white powder. METHOCEL? Premium Products are available in 50-lb, multiwall paper bags as well as 25-kg and 50-kg fiber drums with polyethylene liners. Packaging is dependent on specific grade of METHOCEL Premium Products. The shelf life of unopened bagged products is two years, and five years for products in unopened lined fiber drums.Typical Properties of selected METHOCEL CR Grade Products*
[TABLE="width: 100%"]
[TR]
[TD]METHOCEL Premium Product Grade[/TD]
[TD]____[/TD]
[TD]K100 Premium LV CR[/TD]
[TD]K4M Premium CR[/TD]
[TD]K15M Premium CR[/TD]
[TD]K100M Premium CR[/TD]
[TD]E4M Premium CR[/TD]
[TD]E10M Premium CR[/TD]
[/TR]
[TR]
[TD]Methoxyl, %[/TD]
[TD]USP[/TD]
[TD]19-24[/TD]
[TD]19-24[/TD]
[TD]19-24[/TD]
[TD]19-24[/TD]
[TD]28-30[/TD]
[TD]28-30[/TD]
[/TR]
[TR]
[TD]Hydroxypropoxyl,%[/TD]
[TD]USP[/TD]
[TD]7-12[/TD]
[TD]7-12[/TD]
[TD]7-12[/TD]
[TD]7-12[/TD]
[TD]7-12[/TD]
[TD]7-12[/TD]
[/TR]
[TR]
[TD]Substitution type[/TD]
[TD]USP/EP[/TD]
[TD]2208[/TD]
[TD]2208[/TD]
[TD]2208 [/TD]
[TD]2208[/TD]
[TD]2910[/TD]
[TD]2910[/TD]
[/TR]
[TR]
[TD]Chlorides, max., %[/TD]
[TD]EP[/TD]
[TD]0.5[/TD]
[TD]0.5[/TD]
[TD]0.5[/TD]
[TD]0.5[/TD]
[TD]0.5[/TD]
[TD]0.5[/TD]
[/TR]
[TR]
[TD]Apparent viscosity, 2% in water at 20?C, cP[/TD]
[TD]USP[/TD]
[TD]80-120[/TD]
[TD]3000-5600[/TD]
[TD]11250-21000[/TD]
[TD]80000-120000[/TD]
[TD]3000-5600[/TD]
[TD]7500-14000[/TD]
[/TR]
[TR]
[TD]Apparent viscosity, 2% in water at 20?C, mPa?s[/TD]
[TD]EP[/TD]
[TD]78-117
[98 Nom][/TD]
[TD]2308-3755
[2903 Nom][/TD]
[TD]6138-9030
[7382 Nom][/TD]
[TD]16922-19267
[18243 Nom][/TD]
[TD]2308-3755
[2903 Nom][/TD]
[TD]4646-7070
[5673 Nom][/TD]
[/TR]
[TR]
[TD]ID Test A, B, C[/TD]
[TD]USP[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[/TR]
[TR]
[TD]ID Test A, B, C, D, E, F[/TD]
[TD]EP[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[/TR]
[TR]
[TD]Opalescence of solution[/TD]
[TD]EP[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[/TR]
[TR]
[TD]Solution color, yellowness, 1% in water[/TD]
[TD]EP[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[/TR]
[TR]
[TD]pH, 1% in water[/TD]
[TD]EP[/TD]
[TD]5.5-8.0[/TD]
[TD]5.5-8.0[/TD]
[TD]5.5-8.0[/TD]
[TD]5.5-8.0[/TD]
[TD]5.5-8.0[/TD]
[TD]5.5-8.0[/TD]
[/TR]
[TR]
[TD]Loss on drying, max., %[/TD]
[TD]USP/EP[/TD]
[TD]5.0[/TD]
[TD]5.0[/TD]
[TD]5.0[/TD]
[TD]5.0[/TD]
[TD]5.0[/TD]
[TD]5.0[/TD]
[/TR]
[TR]
[TD]Organic impurities, volatile[/TD]
[TD]USP[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[TD]Pass[/TD]
[/TR]
[TR]
[TD]Residue in ignition, max., %[/TD]
[TD]USP[/TD]
[TD]1.5[/TD]
[TD]1.5[/TD]
[TD]1.5[/TD]
[TD]1.5[/TD]
[TD]1.5[/TD]
[TD]1.5[/TD]
[/TR]
[TR]
[TD]Ash, sulfated, max., %[/TD]
[TD]EP[/TD]
[TD]1.0[/TD]
[TD]1.0[/TD]
[TD]1.0[/TD]
[TD]1.0[/TD]
[TD]1.0[/TD]
[TD]1.0[/TD]
[/TR]
[TR]
[TD]Heavy metals, as Pb, max., ppm[/TD]
[TD]USP/EP[/TD]
[TD]10[/TD]
[TD]10[/TD]
[TD]10[/TD]
[TD]10[/TD]
[TD]10[/TD]
[TD]10[/TD]
[/TR]
[TR]
[TD]% through 40 mesh sieve[/TD]
[TD]None[/TD]
[TD]>99%[/TD]
[TD]>99%[/TD]
[TD]>99%[/TD]
[TD]>99%[/TD]
[TD]>99%[/TD]
[TD]>99%[/TD]
[/TR]
[TR]
[TD]% through 100 mesh sieve[/TD]
[TD]None[/TD]
[TD]>90%[/TD]
[TD]>90%[/TD]
[TD]>90%[/TD]
[TD]>90%[/TD]
[TD] >95%[/TD]
[TD]>95%[/TD]
[/TR]
[/TABLE]