Name | GUM GUAIAC |
Synonyms | Guaiacum GUAIAC GUM GUM GUAIAC Gum guaiaci gumguaiacum GUAIAC RESIN resin guaiac guaicum[resin] Guaiacum (resin) |
CAS | 9000-29-7 |
EINECS | 232-535-2 |
Melting Point | 85°C (dec.)(lit.) |
Merck | 13,4566 |
Storage Condition | RT, dry, sealed |
Physical and Chemical Properties | A natural resin. A greenish-brown or rufous solid. The broken surface is glass-shaped, and the small fragments are transparent. The powder turns dark green in the air. It has a balsamic smell. Slightly pungent. The melting range is 85~90 ℃. Insoluble in water. Soluble in ethanol, ether, chloroform and alkaline solutions. Insoluble in carbon disulfide and benzene. |
Hazard Symbols | Xn - Harmful |
Risk Codes | 22 - Harmful if swallowed |
Safety Description | 36 - Wear suitable protective clothing. |
WGK Germany | 3 |
RTECS | ME6260000 |
Toxicity | LD50 orally in rats: >5000 mg/kg (Jenner) |
preparation method | take 5ml of ethanol solution of 1% sample, mix with 5ml of water, and shake with 20mg of lead peroxide, which should turn blue. The solution was filtered, and part of the filtrate was boiled, and the color disappeared, but after adding lead peroxide and shaking, the primary color could still be restored. Several drops of dilute hydrochloric acid test solution (TS-117) were added to another part of the filtrate, and the color immediately disappeared. |
identification test | solubility insoluble in water; Soluble in fat; Soluble in (but not completely) ethanol, ether, chloroform and lye (OT-42). Melting range 85~90 deg C. In 5ml of 1% sample ethanol solution, add 1 drop of ferric chloride test solution (TS-101), should first be blue, gradually become green, and eventually become green yellow. 5ml ethanol solution of 1% sample was added, mixed with 5ml water, and shaken with 20mg lead peroxide, which should turn blue. The solution was filtered, and part of the filtrate was boiled, and the color disappeared, but after adding lead peroxide and shaking, the primary color could still be restored. Several drops of dilute hydrochloric acid test solution (TS-117) were added to another part of the filtrate, and the color immediately disappeared. |
toxicity | ADI 0-2.5mg/kg(FAO/WHO,2001). LD50 7.50g/kg (rat, oral). |
Use | preservative. It is used as an antioxidant for vegetable oils and creams with a limit of ≤ 1 g/kg (Japan, 1990). |
method of production | is produced by a Guaiacum of the West Indies or G. The core material of sanctum) was extracted by heating. |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |