What Is Antifungal Tea?
Catechol has a molecular formula of C6H6O2, and most of catechol exists in the form of derivatives in nature. For example, o-methoxyphenol and 2-methoxy-4-methylphenol are important components of beech phenol oil. Sympathomimetic amines in mammals, such as epinephrine and norepinephrine, are compounds with a -hydroxyethylamine side chain on the benzene ring of catechol (with the structural formula such as). Catechol is colorless crystal; melting point is 105 ° C, boiling point is 245 ° C (750 mmHg), density is 1.1493 g / cm3 (21 ° C); soluble in water, alcohol, ether, chloroform, pyridine, alkali aqueous solution, insoluble In cold benzene; steam-distillable and sublimable.
[English alias] CI 76500; CI Oxidation Base 26; Catechol; 1,2-Benzenediol (pyrocatechol); 1,2-benzenediol [qr]; 1,2-dihydroxybenzene [qr]; 2-Hydroxyphenol; 2-hydroxyphenol [qr ]; ai3-03995 [qr]; Benzene, o-dihydroxy-; benzene, 1,2-dihydroxy-; Pyrocatechol; benzene-1,2-diol [2]
Main ingredients: pure product.
Appearance and properties: colorless crystals, which can change color when exposed to light or air.
Melting point (° C): 105.
Boiling point (° C): 246.
Catechol is a strong reducing agent and is easily oxidized to phthaloquinone. The reaction formula is as follows:
Catechol
S22Do not breathe dust.
Do not breathe dust.
S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
After accidental contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37Wear suitable gloves.
Wear suitable gloves. [3]
R21 / 22Harmful in contact with skin and if swallowed.
Harmful in contact with skin and if swallowed.
R36 / 38Irritating to eyes and skin.
Irritates eyes and skin. [3]
Organic acids and phenols [3]
This product can stimulate the intestines and smooth muscles of the lining of the uterus. Used as a topical preservative. It has inhibitory activity against Candida albicans and dermatophytes. [2]
Antibacterial, antifungal, acting on the uterus, used as an antioxidant in electroplating solution.
It is used in the manufacture of rubber hardeners, electroplating additives, skin antiseptic fungicides, hair dyes, photographic developers, etc., and is an important chemical intermediate. Catechol is a fungicide ethoxycarb, insecticide paracetamol, and clopicarb Intermediates. [2]
[1] Passiflora Passiflora caerulea L. Flower, Ear
[2] Erigeronbonarienasis Linn. C whole grass
[3]
Respiratory protection: When the dust concentration in the air exceeds the standard, wear a self-absorption filtering dust mask. Wear an air respirator for emergencies or evacuation.
Eye protection: Wear chemical safety protective glasses.
Body protection: Wear protective work clothes.
Hand protection: Wear rubber gloves.
Other protection: No smoking, eating and drinking at the work site. After work, wash thoroughly. Stored separately
Operation management: closed operation, providing sufficient local exhaust. Take isolated actions whenever possible. Operators must be specially trained and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety protective glasses, anti-poison infiltration overalls, and rubber gloves. Away from fire and heat sources, smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid generating dust. Avoid contact with oxidants, acids and alkalis. Handle with care when handling to prevent damage to packaging and containers. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.
Storage management: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Packaging is required to be sealed and not in contact with air. It should be stored separately from oxidants, acids, alkalis, and edible chemicals. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with suitable materials to contain spills.
Transportation management: Before transportation, check whether the packaging container is complete and sealed. During transportation, ensure that the container does not leak, collapse, fall, or damage. Mixed transportation with acids, oxidants, food and food additives is strictly prohibited. During transportation, it should be protected from direct sunlight, rain and high temperature.
Disposal management: Please refer to relevant national and local regulations before disposal. It is recommended to dispose by incineration. [3]
Acute toxicity: LD50: 300 mg / kg (rat oral); 800 mg / kg (rabbit percutaneous).
Subacute and
Key points for diagnosis:
See "
1. Site emergency monitoring method
2. Laboratory monitoring methods
Monitoring method | category | source |
Gas chromatography | | Refer to "Handbook of Analytical Chemistry" (fourth volume, chromatographic analysis) (Chemical Industry Press) |
1. China Occupational Exposure Limit (GBZ 22002)
2. Environmental standards
United States | Workshop hygiene standards | 20mg / m3 |
Former Soviet Union (1978) | Maximum allowable concentration in surface water | 0.1mg / L |
[3]
