2-hydroxybiphenyl sodium salt
2-hydroxybiphenyl sodium salt
CAS: 132-27-4
Molecular Formula: C12H9NaO
2-hydroxybiphenyl sodium salt - Names and Identifiers
2-hydroxybiphenyl sodium salt - Physico-chemical Properties
| Molecular Formula | C12H9NaO |
| Molar Mass | 192.19 |
| Density | 1,213 g/cm3 |
| Melting Point | 59°C |
| Boling Point | 286°C |
| Water Solubility | 1220 g kg-1 (35 °C) |
| Vapor Presure | 1.2Pa at 20℃ |
| Appearance | Liquid |
| Color | Yellow |
| Merck | 14,7304 |
| pKa | 9.9 (acid) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Physical and Chemical Properties | White to light red powder, very soluble in water, insoluble in oil. 1g of this product is soluble in 0.82g water, 0.64g acetone, 0.72g methanol, 3.57G propylene glycol, rat oral ld50625 mg/kg,ADI 0-0.2mg/kg. |
| Use | Fungicide. Mainly used for citrus. The method of use is different from that of OPP(07202). Immersion, spraying or tank washing with 0.3% ~ 2% aqueous solution is mainly adopted. It is also possible to add 0.68% ~ 2% in the wax, and then spray and other methods. |
2-hydroxybiphenyl sodium salt - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R50 - Very Toxic to aquatic organisms |
| Safety Description | S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | DV7750000 |
| HS Code | 29071990 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 oral in rat: 656mg/kg |
2-hydroxybiphenyl sodium salt - Reference Information
| LogP | 3.18 at 22.5℃ |
| (IARC) carcinogen classification | 2B (Vol. Sup 7, 73) 1999 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| identification test | The Identification Tests 1 and 2 in "O-Phenylphenol (07202)" were performed. The sodium salt was identified according to the IT-28 method. |
| content analysis | accurately weigh about 3g of powdered sample, add several drops of sodium hydroxide solution (TS-224), the solution was dissolved in water and set to a volume of 07202 ml, which was used as a sample solution, and then measured according to the method in "O-Phenylphenol (). The coefficient in the calculation was 6.608 instead of 4.255. |
| toxicity | ADI 0~0.2mg/kg (0.2~1.0mg/kg under certain conditions); FAO/WHO,2001). LD50 625mg/kg (rat, oral). When the concentration is greater than 1%, it is obviously irritating to human skin. |
| usage limit | FDA,§ 178.3120(2000): Animal glue for packaging materials. FDA,§ 180.129(2000), Maximum Residue (mg/kg): Apple 25, melon 125, carrot 20, Cherry 5, citrus 10, Mosla, grapefruit, kumquat, lemon, lime, red citrus, cucumber, tomato, pineapple, pepper, all 10, nectarine 5, peach 20, pear 25, Plum 20, sweet potato 15.GB 2760-96: Citrus Fresh-keeping 0.95g/kg; Residue ≤ 12mg/kg. |
| purpose | as a green feed additive, the maximum usage amount is 0.95g/kg. used as a preservative for vegetables and fruits fungicide. Mainly used for citrus. The method of use is different from that of OPP(07202). Immersion, spraying or tank washing with 0.3% ~ 2% aqueous solution is mainly adopted. It is also possible to add 0.68% ~ 2% in the wax, and then spray and other methods. as antiseptic fungicide, China's provisions can be used for citrus preservation, the maximum use of 0 · 95g/kg, the residue is not more than 12mg/kg. fungicide. Mainly used for citrus. The method of use is different from that of OPP(07202). Immersion, spraying or tank washing with 0.3% ~ 2% aqueous solution is mainly adopted. It is also possible to add 0.68% ~ 2% in the wax, and then spray and other methods. |
| production method | The distillation residue from the sulfonation process contains about 40% mixed-position (p-and O-position) phenyl phenol, the ortho product was isolated and recovered using fractional distillation and the difference in solubility in trichloroethylene. The distillation residue was subjected to fractional distillation under reduced pressure at a vacuum of 53.3 to 100 kPa, and a fraction at 65 to ° C. Was collected as mixed Phenylphenol. The mixture was dissolved in trichloroethylene by heating, and after Cooling, p-Phenylphenol was precipitated. After centrifugal filtration, the mother liquor was washed with a sodium carbonate solution to make O-Phenylphenol a sodium salt. After standing, the sodium salt of the upper layer was taken and dehydrated under reduced pressure to obtain the product. O-Phenylphenol is obtained by neutralizing O-Phenylphenol with sodium carbonate about 40% of mixed-position (P-position and O-position) Phenylphenol is contained in the distillation residue of phenol produced by sulfonation. Depending on the solubility in trichloroethylene, the distillation residue was fractionated under reduced pressure at a vacuum of 53.3-66.7kPa, and a fraction of 65-100 ° C., I .e., mixed Phenylphenol was collected. The mixture was dissolved in trichloroethylene by heating, and after Cooling, p-Phenylphenol was precipitated. After centrifugal filtration, the mother liquor was washed with a sodium carbonate solution to make O-Phenylphenol a sodium salt. After standing, the sodium salt of the upper layer was taken and dehydrated under reduced pressure to obtain the product. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 656 mg/kg; Oral-mouse LD50: 683 mg/kg |
| stimulation data | Skin-rabbits 25 mg/24 h mild |
| flammability hazard characteristics | flammable, spicy and irritating smoke containing sodium oxide emitted from fire scene |
| storage and transportation characteristics | warehouse low temperature, ventilation, dry |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
Last Update：2024-04-09 21:11:58
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View History
2-hydroxybiphenyl sodium salt
3-(3,5-二叔丁基-4-羟基苯基)丙酸正十八烷醇酯
SODIUM N-BUTYL SULPHATE
3-Hydroxy-5-(4-methoxy-3-methylphenyl)pyridine
2-(difluoroMethoxy)pyridine-3-carboxylic acid
5-AMINO-2-CHLORO-4-SULFOTOLUENE
邻二氯苄
3-(3,5-二叔丁基-4-羟基苯基)丙酸正十八烷醇酯
SODIUM N-BUTYL SULPHATE
3-Hydroxy-5-(4-methoxy-3-methylphenyl)pyridine
2-(difluoroMethoxy)pyridine-3-carboxylic acid
5-AMINO-2-CHLORO-4-SULFOTOLUENE
邻二氯苄