Table 2: Results of powder XRD.

Type of system d-spacing [Å] at 20.17 [2] of Ethylcellulose (4 cP) Intensity [cts] at
19.47[2Ø]
RDC Crystallite
Size (nm)
Timolol base - 4054 - 671.77
Ethylcellulose (4 cP) 4.398 - - -
EC - 50% 4.134 1283 31.67 250.56
EC - 70% 4.244 875 21.58 81.61
EC - 85% 4.309 621 15.31 9.4