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Merck
CN

01916

Agar

powder, suitable for microbiology

Synonym(s):

Agar-agar, Gum agar

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About This Item

Linear Formula:
(C12H18O9)n
CAS Number:
9002-18-0
NACRES:
NA.74
UNSPSC Code:
41106212
MDL number:
MFCD00081288

Key Documents

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Product Name

Agar, powder, suitable for 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

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

form

powder

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 (SO42-): ≤2.75%

cation traces

Ca: ≤500 ppm
Mg: ≤200 ppm

application(s)

microbiology

storage temp.

15-25°C

Quality Level

100

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Analysis Note

Toxic substances: absence
Nephelosi/after autoclaving NTU <8

General description

Agar is a gelatinous substance, commonly used as a solidifying agent in microbiological media. It provides a stable platform for the growth of microorganisms. This agar is a mixture of Gelidium agar and a small amount of Gracilaria agar. It gives a very clear gel and shows the same good characteristics as the typical pure Gelidium agar.

Storage Class

11 - Combustible Solids

wgk

WGK 1

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN1400
BCCM5334
BCCK2888
BCCD5467

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