PEG衍生物依分子量不同而性质不同，从无色无臭黏稠液体至蜡状固体。分子量200～600者常温下是液体，分子量在600以上者就逐渐变为半固体状，随着平均分子量的不同，性质也有差异。从无色无臭粘稠液体至蜡状固体。随着分子量的增大，其吸湿能力相应降低。本品溶于水、乙醇和许多其它有机溶剂。蒸气压低，对热、酸、碱稳定。与许多化学品不起作用。有良好的吸湿性、润滑性、粘结性。无毒，无刺激。平均分子量300，n=5～5.75，熔点-15～8℃，相对密度1.124～1.130。平均分子量600，n=12～13，熔点20 ～25℃，闪点246℃，相对密度1.13 (20℃)。平均分子量4000，n=70～85，熔点53～ 56℃。PEG衍生物种类如下：
支链PEG衍生物，即Y-型PEG衍生物，是由两个直链的甲氧基PEG衍生物连接在中心核构成。Y-型PEG衍生物立体结构庞大，可以弥补单链接PEG衍生物的不足。常规产品如下：Y-NHS-40K: Y-shape PEG NHS Ester, MW 40000 Y-COOH-40K: Y-shape PEG Carboxyl, MW 40000Y-MAL-40K: Y-shape PEG Maleimide, MW 40000 Y-AALD-40K: Y-shape PEG Acetaldehyde, MW 40000 Y-PALD-40K: Y-shape PEG Propionaldehyde, MW 40000 Y-NH2-40K: Y-shape PEG Amine, MW 40000Y-FITC-40K: Y-Shape PEG Fluorescein, MW 40000
直链单官能团PEG衍生物一端有活性基团，另一端由甲氧基基团或糖基封端。常规产品如下：GLUC-NHS-35K: Glucose PEG NHS Ester, MW 35000 GALA-NHS-35K: Glucose PEG NHS Ester, MW 35000 M-PEG-SCM: Methoxy PEG Succinimidyl Carboxymethyl Ester, MW 2000, MW 3000, MW 5000, MW 10000, MW 20000, MW 30000, MW 35000, MW 40000 M-PEG-COOH: Methoxy PEG Carboxyl, MW 5000, MW 10000, MW 20000M-PEG-SBA: Methoxy PEG Succinimidyl Butanoate, MW 20000M-PEG-SHA: Methoxy PEG Succinimidyl Hexanoate, MW 5000, MW 20000M-PEG-HA: Methoxy PEG Hexanoic Acid, MW 5000, MW 20000M-PEG-SSA: Methoxy PEG Succinimidyl Succinamide, MW 5000, MW 20000 M-PEG-SGA: Methoxy PEG Succinimidyl Glutaramide, MW 5000, MW 20000 M-PEG-SC: Methoxy PEG Succinimidyl Carbonate, MW 10000, MW 12000, MW 20000 M-PEG-NPC: Methoxy PEG Nitrophenyl Carbonate, MW 10000, MW 20000 M-PEG-SS: Methoxy PEG Succinimidyl Succinate, MW 5000, MW 20000 M-PEG-SG: Methoxy PEG Succinimidyl Glutarate, MW 5000, MW 20000 M-PEG-MAL: Methoxy PEG Maleimide, MW 2000, MW 5000, MW 10000, MW 20000, MW 30000, MW 40000 M-PEG-VS: Methoxy PEG Vinylsulfone, MW 5000, MW 20000 M-PEG-SH: Methoxy PEG Thiol, MW 5000, MW 20000 M-PEG-ALD: Methoxy PEG Propionaldehyde, MW 5000, MW 10000, MW 20000, MW 30000, MW 40000 M-PEG-NH2: Methoxy PEG Amine, HCl Salt, MW 2000, MW 3000, MW 5000, MW 10000, MW 20000, MW 30000, MW 40000 M-PEG-HZ: Methoxy PEG Hydrazide, MW 5000, MW 10000, MW 20000 M-PEG-AZIDE: Methoxy PEG Azide, MW 5000, MW 20000 M-PEG-BIOTIN: Methoxy PEG Biotin, MW 5000, MW 20000 M-PEG-ACLT: Methoxy PEG Acrylate, MW 5000, MW 20000 M-PEG-SLN: Methoxy PEG Silane, MW 5000, MW 20000 M-PEG-DSPE: Methoxy PEG DSPE, MW 5000 M-GLC-PEG: Custom Synthesis同官能团双取代PEG衍生物。常规产品如下：COOH-PEG-COOH: Carboxyl PEG Carboxyl, MW 2000, MW 3500, MW 5000, MW 7500 SCM-PEG-SCM: PEG (Succinimidyl Carboxymethyl Ester)2, MW 2000, MW 3500, MW 5000, MW 7500 NH2-PEG-NH2: Amine PEG Amine, HCl Salt, MW 2000, MW 3500, MW 5000, MW 7500 MAL-PEG-MAL: Maleimide PEG Maleimide, MW 2000, MW 3500, MW 5000, MW 7500 ACLT-PEG-ACLT: Acrylate PEG Acrylate, MW 2000, MW 3500, MW 5000, and MW 7500 SH-PEG-SH: Thiol PEG Thiol, MW 3500, MW 5000 VS-PEG-VS:  Vinylsulfone PEG Vinylsulfone, MW 3500, MW 5000 单一分子量PEG衍生物HO-PEG-PA: Hydroxyl PEG Propionic Acid, MW 266.3, MW 618.8 NH2-PEG-PA: Amine PEG Propionic Acid, MW 265.4, MW 617.8 HO-PEG-NH2: Hydroxyl PEG Amine, MW 193.3, MW 545.8 NH2-PEG-NH2: Amine PEG Amine, MW 192.3, MW 544.8  HO-PEG-CM: Hydroxyl PEG Carboxyl, MW 252.3, MW 604.8 CM-PEG-CM: Carboxyl PEG Carboxyl,  MW 294.3, MW 662.7 PA-PEG-PA: Propionic Acid PEG Propionic Acid, MW 338.3, MW 674.8 HO-PEG-OH: Polyethylene Glycol, MW 362.4, MW 414.5, MW 546.7多臂PEG衍生物，常规产品如下：Core structure: pentaerythritol 4ARM-PEG-NH2: 4arm PEG Amine, HCl Salt, MW 5000, MW 10000, MW 20000, MW 40000 4ARM-PEG-COOH: 4arm PEG Carboxyl, MW 10000, MW 20000, MW 40000 4ARM-PEG-SCM: 4arm PEG Succinimidyl Carboxymethyl Ester, MW 10000, MW 20000, MW 40000 4ARM-PEG-MAL: 4arm PEG Maleimide, MW 10000, MW 20000, MW 40000 4ARM-PEG-ACLT: 4arm PEG Acrylate, MW 10000, MW 20000 4ARM-PEG-SH: 4arm PEG Thiol, MW 5000, MW 10000, MW 20000 4ARM-PEG-SS: 4arm PEG Succinimidyl Succinate, MW 10000, MW 20000, MW 40000 4ARM-PEG-SG: 4arm PEG Succinimidyl Glutarate, MW 10000, MW 20000, MW 40000Core structure: hexaglycerin 8ARM-PEG-NH2: 8arm PEG Amine, HCl Salt, MW 10000, MW 20000, MW 40000 8ARM-PEG-COOH: 8arm PEG Carboxyl, MW 10000, MW 20000, MW 40000 8ARM-PEG-MAL: 8arm PEG Maleimide (hexaglycerin), MW 10000, MW 20000, MW 40000 8ARM-PEG-ACLT: 8arm PEG Acrylate (hexaglycerin), MW 10000, MW 20000 8ARM-PEG-SH, 8arm PEG Thiol (hexaglycerin), MW 10000, MW 20000 8ARM-PEG-SS: 8arm PEG Succinimidyl Succinate, MW 10000, MW 15000, MW 20000, MW 40000 8ARM-PEG-SG: 8arm PEG Amine, MW 10000, MW 15000, MW 20000, MW 40000Core structure: tripentaerythritol 8ARM(TP)-PEG-NH2: 8arm PEG Amine (tripentaerythritol), HCL Salt, MW 10000, MW 20000, MW 40000 8ARM(TP)-PEG-COOH: 8arm PEG Carboxyl(tripentaerythritol), MW 10000, MW 20000, MW 400008ARM(TP)-PEG-MAL: 8arm PEG Maleimide(tripentaerythritol), MW 10000, MW 20000, MW 400008ARM(TP)-PEG-ACLT: 8arm PEG Acrylate (tripentaerythritol), MW 10000, MW 200008ARM(TP)-PEG-VS: 8arm PEG Vinylsufone(tripentaerythritol), MW 10000, MW 200008ARM(TP)-PEG-SH: 8arm PEG Thiol(tripentaerythritol), MW 10000, MW 200008ARM(TP)-PEG-SS: 8arm PEG Succinimidyl Succinate (tripentaerythritol), MW 10000, MW 15000, MW 20000, MW 400008ARM(TP)-PEG-SG: 8arm PEG Succinimidyl Glutarate (tripentaerythritol), MW 10000, MW 15000, MW 20000, MW 40000以上资料由德尔塔生物提供！！