Agar , Bacterial level , 9002-18-0

Synonym(s):
Agar;Agar-agar;Gum agar;MACCONKEY agar;MacConkey medium

CAS NO.：9002-18-0

Empirical Formula: C14H24O9

Molecular Weight: 336.335

MDL number: MFCD00081288

EINECS: 232-658-1

PRODUCT Properties

• Melting point: 85-95 °C
• FEMA: 2012 | AGAR (GELIDIUM SPP.)
• storage temp.: room temp
• solubility: H₂O: 1.5% with heat
• form: shredded
• color: Brownish yellow
• Odor: Odorless
• PH Range: 5 - 7
• PH: 6.5-6.8 (1.5% in gel, after autoclaving)
• Odor Type: bland
• Water Solubility: SOLUBLE IN HOT WATER
• Sensitive: Moisture Sensitive & Hygroscopic
• Merck: 14,184
• Stability: Stable. Incompatible with strong oxidizing agents.

Description and Uses

Agar is a gum obtained from red seaweeds of the genera gelidium, gracilaria, and eucheuma, class rhodophyceae. it is a mixture of the polysaccharides agarose and agaropectin. it is insoluble in cold water, slowly soluble in hot water, and soluble in boiling water, forming a gel upon cooling. the gels are characterized as being tough and brittle, setting at 32–40°c, and melting at 95°c. a rigid, tough gel can be formed at 0.5%. agar mainly functions in gel for- mation because of its range between melting and setting tempera- tures, being used in piping gels, glazes, icings, dental impression material, and microbiological plating. typical use levels are 0.1–2.0%.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P261-P271-P280
• Hazard Codes: Xn
• Risk Statements: 22-36/37/38
• Safety Statements: 26-36-24/25
• WGK Germany: 2
• RTECS: AW7950000
• F: 3
• TSCA: Yes
• HS Code: 13023100
• Toxicity: LD50 orally in Rabbit: 11000 mg/kg