8.18897
聚乙二醇
20000 (stabilised) for synthesis
别名:
聚（乙二醇）, PEG
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关于此项目
线性分子式:
H(OCH2CH2)nOH
化学文摘社编号:
NACRES:
NA.22
EC Index Number:
500-038-2
UNSPSC Code:
13111021
MDL number:
产品名称
聚乙二醇, 20000 (stabilised) for synthesis
InChI
1S/C2H6O2/c3-1-2-4/h3-4H,1-2H2
SMILES string
C(CO)O
InChI key
LYCAIKOWRPUZTN-UHFFFAOYSA-N
vapor pressure
<0.01 hPa ( 20 °C)
form
flakes
autoignition temp.
>320 °C
potency
28000 mg/kg LD50, oral (Rat)
>20000 mg/kg LD50, skin (Rabbit)
greener alternative product characteristics
Safer Solvents and Auxiliaries
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Greener Alternative Product
pH
5-7 (20 °C, 100 g/L in H2O)
mp
58-63 °C
transition temp
flash point 240 °C
solubility
500 g/L
density
1.2 g/cm3 at 20 °C
bulk density
400‑500 kg/m3
greener alternative category
storage temp.
2-30°C
Quality Level
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相关类别
Analysis Note
熔程（下限值）： ≥ 62 °C
熔程（上限值）： ≤ 66 °C
羟值：4 - 7
平均分子量：16000 - 28000
熔程（上限值）： ≤ 66 °C
羟值：4 - 7
平均分子量：16000 - 28000
Application
聚乙二醇20000(PEG-20000)可作为扩孔剂，用于通过水热法制备介孔La2O3催化剂。PEG 20000可改善La2O3催化剂颗粒的碱度、结晶度、比表面积和分散性。改性后的催化剂对于碳酸二甲酯和甘油的酯交换反应的催化性能更强。
还可用作：
还可用作：
- 表面活性剂，用于各种方法合成纳米材料，控制纳米结构的大小和形态。
- 载体，用于制备零价铁-PEG纳米复合材料(Fe/PEG)，用于去除水性溶液中的Pb(II)。
General description
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. Polyethylene glycol (PEG) is an eco-friendly, biodegradable polymer widely used in pharmaceuticals and cosmetics. Its non-toxic nature and versatility make it a sustainable choice, derived from renewable resources, contributing to greener product formulations. Click here for more information.
存储类别
10 - Combustible liquids
wgk
WGK 1
flash_point_f
281.5 °F - closed cup
flash_point_c
138.6 °C - closed cup
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