01916

Agar

suitable for microbiology

• Synonym(s): Agar-agar, Gum agar
• Linear Formula: (C₁₂H₁₈O₉)_n
• CAS Number: 9002-18-0
• MDL number: MFCD00081288
• UNSPSC Code: 41106212
• NACRES: NA.74

Properties

• form: powder
• Quality Level: 100
• shelf life: limited shelf life, expiry date on the label
• loss: ≤10% loss on drying
• pH: 6-7.5 (1.5% in gel, after autoclaving )
• mp: 85-89 °C
• transition temp: gel point 34-36 °C
• gel strength: ≥800 g/cm²Nikkan, after autoclaving
• anion traces: sulfate (SO₄^2-): ≤2.75%
• cation traces: Ca: ≤500 ppm; Mg: ≤200 ppm
• application(s): microbiology
• storage temp.: 15-25°C
• InChI: 1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1
• InChI key: GYYDPBCUIJTIBM-DYOGSRDZSA-N

Description

Application

This agar is a mxture of Gelidium agar and a small amount of Gracilaria agar. It gives a very clear gel and shows the same good charakteristics as the typical pure Gelidium agar.

Analysis Note

Toxic substances: absence
Nephelosi/after autoclaving NTU <8

Safety Information

• wgk_germany: WGK 1