3rd prac(cal class ASSAY – VOLUMETRIC ANALYSIS
ASSAY
Analyt: Salicilic acid (AS)
Volumetric solu?on: NaOH 0.1M
Titre of volumetric solu?on: 0,9998
Type of ?tra?on: Acid-base (tra(on
1mL of 0,1M NaOH is equivalent to 13.82mg of AS
STATISTICAL EVALUATION:
Range: R = 0.2
Standard devia?on (es$mated from range): sd = 0.09714
Rela?ve standard devia?on: RSD = 0.1089
CONCLUSION (does your sample meet/not meet Ph. Eur).: The content should be between
99-100.5% and we have 89.19% so it doesn’t meet wit the pharmacopeia.
Titra?on No. m [g] (4 decimal places) or V [ml] Consump?on of VS [ml] ASSAY (%)
1. 0.1212 7.83 89.2
2. 0.1205 7.79 89.26
3. 0.1199 7.75 89.25
4. 0.1200 7.74 89.06
Average 89.19
1