Formaldehyde was first reported by the Russian chemist Aleksandr Butlerov (1828-1886), but it was conclusively identified by August Wilhelm von Hofmann.
Classification Code: Culture media ; Natural Product ; TSCA Flag XU [Exempt from reporting under the Inventory Update Rule] ; Tumor data
Molecular Formula of Agar (CAS NO.9002-18-0): (C12H18O9)n
Melting Point: 85-95 °C
Storage temp: BELOW +15 °C
Solubility H2O: 1.5% with heat
Water Solubility: SOLUBLE IN HOT WATER
Sensitive: Moisture Sensitive & Hygroscopic
Stability: Stable. Incompatible with strong oxidizing agents
Microbiology: Agar (CAS NO.9002-18-0) is widely used to provide a solid surface containing medium for the growth of bacteria and fungi. Agar is typically sold commercially as a powder that can be mixed with water and prepared similarly to gelatin before use as a growth medium.
Motility assays: As a gel, an agarose medium can be used to measure microorganism motility and mobility because it is porous.
Agar is also used as an impression material in dentistry and used to make salt bridges for use in electrochemistry. In formicariums, Agar can be used as a transparent substitute for sand and a source of nutrition.
|Organism||Test Type||Route||Reported Dose (Normalized Dose)||Effect||Source|
|hamster||LD50||oral||6100mg/kg (6100mg/kg)||Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976.|
|mouse||LD50||oral||16gm/kg (16000mg/kg)||Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976.|
|rabbit||LD50||oral||5800mg/kg (5800mg/kg)||Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976.|
|rat||LD50||oral||11gm/kg (11000mg/kg)||Food & Drug Research Laboratories, Inc., Papers. Vol. 124, Pg. -, 1976.|
NTP Carcinogenesis Bioassay (feed); No Evidence: mouse, rat NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD 20014) No. NTP-TR-230 ,1982. . Reported in EPA TSCA Inventory.
Hazard Codes: Xn
Risk Statements: 22-36/37/38
R22: Harmful if swallowed.
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-24/25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
S24/25: Avoid contact with skin and eyes.
WGK Germany: 2
Mildly toxic by ingestion. When heated to decomposition it emits acrid smoke and fumes.
Synonyms of Agar (CAS NO.9002-18-0) are Agar (Gelidium spp.) ; Agar agar flake ; Agar-agar ; Agar-agar gum ; Agaropectin, mixt with agarose ; Agarose, mixt with agaropectin ; Bengal ; Bengal gelatin ; Bengal isinglass ; CCRIS 16 ; Ceylon ; Ceylon isinglass ; Chinese gelatin ; Chinese isinglass ; Digenea simplex mucilage ; Gelose ; HSDB 1901 ; Isinglass, japanese ; Japan agar ; Japan isinglass ; Japanese gelatin ; Layor carang ; Macassar gelatin ; NCI-C50475 ; UNII-3PBT7NM2M0 ; UNII-89T13OHQ2B ; UNII-LPT5H1B7X5 ; Vegetable gelatin .