3, 5-dihydroxytoluene, also known as p-hydroxycresyl
Nature:
Appearance: 3, 5-dihydroxytoluene is a colorless to pale yellow crystal or crystalline powder.
Solubility: It can be dissolved in alcohols, ethers and phenolic solvents, slightly dissolved in water.
Stability: 3, 5-dihydroxytoluene is stable at room temperature, but it is easy to burn at open flames and high temperatures.
Preparation:
The preparation of 3, 5-dihydroxytoluene can be obtained by sulfonic reaction of toluene, and then through the steps of reduction and turbidization, hydrogen hydrolysis and purification.
Safety information:
3, 5-dihydroxytoluene is irritating to the eyes and skin and should be rinsed with plenty of water immediately after contact.
Avoid inhaling steam from powder or solution. The workplace should be well ventilated.
Wear personal protective equipment such as protective gloves, glasses, and protective clothing during operation to ensure safe operation.
Keep away from fire and oxidants, and avoid high temperature and direct sunlight.
Chemical reagent: 3, 5-dihydroxytoluene can be used as a chemical reagent for catalysts, ligands and reducing agents in organic synthesis reactions.
Pigments and dyes: It is widely used in the preparation of pigments and dyes, and can be used to produce phenolic resin, phenolic glass and other products.
He maha nga wheketere kounga teitei me te mahi tahi, ka taea e koe te whakarato i nga hua o te kounga teitei me nga utu whakataetae. Ka taea hoki e matou te tuku utu mo nga hokonga nui.A ka mahi tahi matou me te maha o nga kamupene kawe utanga ngaio, ka taea te tuku hua ma te humarie me te pai ki o ringaringa. Ko te wa tuku mo nga ra 3-20 i muri i te whakapumautanga o te utu.
Molecular Formula | C7H8O2 |
Molar Mass | 124.14 |
Density | 1.2900 |
Iwi Whakarewa | 106-112°C(lit.) |
Boling Point | 290 °C |
Flash Point | 159 °C |
Solubility | Soluble in water, soluble in alcohol and ether, easily soluble in benzene; slightly soluble in chloroform and carbon disulfide. |
Vapor Presure | 0.00122mmHg at 25°C |
Te ahua | White rhomboid crystal |
Color | Pink-gray to pink-brown |
Merck | 14,6864 |
BRN | 1071903 |
pKa | 9.56±0.10(Predicted) |
Storage Condition | Store at <= 20°C. |
Te pumau | Hygroscopic |
Sensitive | Air Sensitive |
Refractive Index | 1.4922 (estimate) |
1. He wheketere koe, he kamupene hokohoko ranei?
He kamupene matou e whakauru ana i te ahumahi me te hokohoko, e whakarato ana i te ratonga kotahi-mutu. Ka taea e OEM te whakaae.
2. Kei te whakarato koe i nga tauira? He kore utu, he taapiri ranei?
Ko nga tauira kore utu.Ko te utu utauta a te tauira me utu e to taha.
3. Kei a koe etahi tiwhikete e pa ana ki te mana kounga?
ISO 9001: Tiwhikete 2008 hei whakarite i te kounga.
4. He aha te mea me whakarato e au ki te tiki korero?
Pls whakamohio mai ki a matou mo te momo hua e hiahiatia ana e koe, te rahinga ota, te wahitau me nga whakaritenga motuhake.Ka mahia te korero mo to tohutoro i te waa.
5. He aha te ahua o te tikanga utu e pai ana koe? He aha nga momo tikanga e whakaaetia ana?
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Te Reo Korero:Maori.
Nga waahanga hua