Hydroxypropyl Cellulose, 4,000-6,500 cps, NFTest Specification Min Max ASSAY (HYDROXYPROPOXY GROUPS) 53. 4 80. 5 % APPARENT VISCOSITY OF A 2% AQUEOUS SOLN. @25 C As reported As reported pH OF A 1% SOLUTION 5. 0 8. 0 LOSS ON DRYING 5. 0% SILICA OR OTHER ANTICAKING AGENTS 0. 6% RESIDUE ON IGNITION 0. 8% LEAD 10 ppm ELEMENTAL IMPURITIES AS REPORTED AS REPORTED IDENTIFICATION TO PASS TEST TO PASS TEST RETEST DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS TO PASS TEST TO PASS TEST