05040

Agar

powder, suitable for microbiology

• Szinonimák: Agar-agar, Gum agar
• Lineáris képlet: (C₁₂H₁₈O₉)_n
• CAS-szám: 9002-18-0
• EC-szám: 232-658-1
• MDL-szám: MFCD00081288
• UNSPSC kód: 41106212
• eCl@ss: 42040102
• NACRES: NA.74

Tulajdonságok

• sterilitás: non-sterile
• Minőségi szint: 100
• Forma: powder
• eltarthatósági idő: limited shelf life, expiry date on the label
• kiszerelés: pkg of 1 kg; pkg of 100 g; pkg of 250 g
• tárolási körülmény: (Tightly closed)
• izzítási maradék: ≤6%
• veszteség: ≤20% loss on drying
• pH: 5-8 (50 °C, 1.5% in H₂O, 100 °C/15 min.)
• átmeneti hőmérséklet: gel point ~35 °C (1.5% solution)
• gél szilárdság: >300 g/cm² (1.5% gel)
• oldhatóság: H₂O: 1.5% at 70 °C, clear to slightly hazy (100 °C/15 min.)
• alkalmazás(ok): agriculture; microbiology
• 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
• Nemzetközi kémiai azonosító kulcs: GYYDPBCUIJTIBM-DYOGSRDZSA-N

Leírás

Általános leírás

Agar is widely used in microbiology as a solidifying agent in microbial culture media. It is a polysaccharide derived from seaweed and is primarily composed of agarose. Agar is a mostly inert substance, which makes it an ideal material for microbial culture media because it doesn’t interfere with the growth of microorganisms. Agar can solidify media, allowing microorganisms to grow in a solid environment to promote the formation of distinct colonies and enable selective isolation of specific microorganism. It is also used to prepare selective and differential media, which can provide additional nutrients or other chemical substances to promote or inhibit the growth of specific microorganisms selectively. Agar is sterilized by autoclaving and then poured into Petri dishes to cool and solidify, forming the surface for microbial growth.

Alkalmazás

Agar is commonly used as a solidifying agent in many microbial culture media for the growth and identification of bacteria, yeasts, and molds from various pharmaceutical, environmental, and food and beverage samples.

Biztonsági adatok

• Tárolási osztály kódja: 11 - Combustible Solids
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable
• Egyéni védőeszköz: Eyeshields, Gloves, type N95 (US)