Hebei Tuofu Engry Technology Co., Ltd.

一.Hydroquinone, also known as hydroquinone, is an organic compound formed by the replacement of two parabolic hydrogens of benzene by hydroxyl group. The chemical formula is C6H6O2. It is a white crystalline powder, mainly used in the production of black and white developer, anthraquinone dye, azo dye, rubber antioxidant, stabilizer and antioxidant.

Chinese name： Hydroquinone    foreign name： hydroquinone, 1, 4-quinone

 chemical formula ：C6H6O2      molecular weight 110.111

CAS login number 123-31-9        Melting point 172 to 175 ℃

Boiling point 286 ℃              Density :1.328 g/cm³

Appearence:White crystalline powder   flash point :141.6 ℃

should use black and white developer, anthraquinone dye, azo dye, rubber antioxidant, stabilizer and antioxidant

二.Physical and chemical properties

Density: 1.328g/cm3                                                               Melting point: 172-175℃

Boiling point: 286                     Flash point: 141.6

Refractive index: 1.612                                                           Critical temperature: 549.9℃

Critical pressure: 7.45MPa                                                     Ignition temperature: 516℃

Upper explosion limit (V/V) : 15.3%                                      Lower explosive limit (V/V) : 1.6%

Properties: white acicular crystal, see light discoloration, with special odor solubility: soluble in hot water, soluble in cold water, ethanol and ether, slightly soluble in benzene

三.Toxicology data editing

1. Acute toxicity LD50:320mg/kg (rat oral); People with oral weight 5000mg/kg, death.

2, irritation: human percutaneous: 250mg (24 hours), mild irritation.

3, subacute and chronic toxic animal subacute poisoning is manifested by hemolytic jaundice, anemia, leukocytosis, increased red blood cell fragility, hypoglycemia, dull fur and obvious cachexia. 4. Mutagenicity of mutagenic microorganisms: Salmonella typhimurium 2μmol/ dish. Micronucleus test: Human lymphocytes 75μmol/L. Sex chromosome deletion and nonsegregation: human lymphocytes 6mg/kg. DNA damage: Human bone marrow 500mol/L. 5. Reproductive toxicity: The lowest oral toxic dose (TDLo) of rats: 2500mg/kg (1-22 days of pregnancy), resulting in post-implantation mortality (51 days, male), affecting testis, epididymis, vas deferens, prostate, seminal vesicles, etc., affecting male fertility index.

四.Purpose editing

1, hydroquinone is mainly used as a photographic developer. Hydroquinone and its alkylates are widely used as inhibitors added during monomer storage and transportation, with a common concentration of about 200ppm.

2, used as rubber and gasoline antioxidant, etc.

3, in the field of treatment, the hydroquinone is added to the hot water and cooling water of the closed circuit heating and cooling system, which can inhibit the corrosion of the water-side metal. Hydroquinone is a deoxidizer of furnace water to which hydroquinone is added during boiler water preheating and deoxidizing to remove residual dissolved oxygen.

4, is the manufacture of anthraquinone dyes, azo dyes, pharmaceutical raw materials.

5, used as detergents corrosion inhibitor, stabilizer and antioxidant, but also used in cosmetics hair dye.

6, photometric determination of phosphorus, magnesium, niobium, copper, silicon and arsenic. Polarographic and volumetric determination of iridium. Reducing agent of heteropoly acid, reducing agent of copper and gold

五.Protection edit

Eye protection: Wear chemical safety glasses. Protective clothing: Wear appropriate protective clothing. Hand protection: Wear chemical-resistant gloves. Respiratory system protection: When the concentration in the air exceeds the standard, you must wear a gas mask. In case of emergency rescue or escape, wear self-contained breathing apparatus Other: smoking, eating and drinking are prohibited at the work site. After working, wash thoroughly. Store the clothes contaminated with poison separately and wash them before use. Pay attention to personal hygiene

六.First aid editor

Eye contact: Immediately lift eyelids and rinse with running water or saline for at least 15 minutes. Seek medical attention. Inhalation: Quickly remove from the scene to fresh air. Keep your airway clear. Give oxygen when breathing is difficult. When breathing stops, give artificial respiration immediately. Seek medical attention. Ingestion: The patient should drink 15-30ml of vegetable oil immediately when awake. Induce vomiting, wash the stomach thoroughly as soon as possible. Seek medical attention. Skin contact: Immediately remove contaminated clothing and wipe with glycerin, polyethylene glycol or a mixture of polyethylene glycol and alcohol (7:3). Then rinse thoroughly with water. Or immediately rinse with water for at least 15 minutes. Seek medical attention.

七.Packing, storage and transportation

Transportation precautions: The railway transportation should be in strict accordance with the dangerous goods loading table in the Ministry of Railways "Dangerous Goods Transport Rules". Before transportation, check whether the packaging container is complete and sealed, and ensure that the container does not leak, collapse, fall, or damage during transportation. It is strictly prohibited to mix with acids, oxidants, food and food additives. During transportation, it should be protected from sunlight, rain and high temperature. Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat. The package should be sealed and not in contact with air. It should be stored separately from oxidizers, acids, alkalis and edible chemicals, and should not be mixed. Equipped with the corresponding variety and quantity of fire equipment. Storage areas should be equipped with suitable materials to contain leaks. The "five-double" management system of extremely toxic substances should be strictly implemented; Packing precautions: plastic bag or two layer kraft paper bag outer fiberboard bucket, plywood bucket, cardboard bucket; Plastic bag or two layer kraft paper bag outside ordinary wooden box; Threaded glass bottles, iron lid pressed glass bottles, plastic bottles or metal barrels (cans) outside ordinary wooden cases; Threaded glass bottles, plastic bottles or tinned sheet steel barrels (cans) are covered with floor lattice boxes, fiberboard boxes or plywood boxes.