DL-Lactic Acid

Product Code :  S8001471-500ML
Brand:  BRECKLAND SOLUTIONS
Assay:  88%
CAS:  50-21-5
Index No.:  Not listed
EC No.:  200-018-0
Formula:  CH₃CH(OH)COOH
Synonyms:  2-Hydroxypropionic Acid
Info:  0
UN Hazard Class:  N/A
UN Number:  N/A
UN Packing Group:  NA

Q = What is the concentration (assay) of this? The SDS states 90-100% but the catalogue states 88%
A = The 90 - 100% on the SDS covers the likely rage which this could be. The 88% in the catalogue is a nominal percentage value i.e. it is representative of a typical value. Each batch does vary in concentration and if required, the supplier should be able to verify this.
 The 90% assay works out at  works out 12.08M. The 88% assay works out at 11.81M

Q = What is the molarity of the concentrated solution?
A = Density = 1.209g/ml (1209g/L); Assay = 88%; MW = 90.08
Molarity = (density (g/l) x (assay%/100)) ÷ mol wt
Therefore: (1209 x 0.88) ÷ 90.08 = 11.81M