05039

Agar

suitable for microbiology

• Sinónimos: Agar goma, Agar-agar
• Fórmula lineal: (C₁₂H₁₈O₉)_n
• Número de CAS: 9002-18-0
• Número CE: 232-658-1
• Número MDL: MFCD00081288
• Código UNSPSC: 41106212
• eCl@ss: 42040102
• NACRES: NA.74

Propiedades

• esterilidad: non-sterile
• Nivel de calidad: 100
• Formulario: powder
• caducidad: limited shelf life, expiry date on the label
• envase: pkg of 50 g; pkg of 500 g
• condiciones de almacenamiento: (Tightly closed)
• residuo de ign.: ≤5%
• pérdida: ≤12% loss on drying
• pH: 6-7.5 (1.5%after autoclaving)
• mp: 85-95 °C
• temperatura de transición: gel point 33-37 °C (1.5% solution, after autoclaving)
• fuerza de gel: >800 g/cm² (1.5% gel, Nikkan, after autoclaving)
• solubilidad: H₂O: 1.5% at 70 °C, clear to very faintly turbid, almost colorless
• aplicaciones: 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
• Clave InChI: GYYDPBCUIJTIBM-DYOGSRDZSA-N

Descripción

Descripción general

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, facilitating the formation of distinct colonies and selective isolation of specific microorganism. Agar 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 dishesto cool and solidify, forming the surface for microbial growth.

Aplicación

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.

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)