Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
Physical Properties
- Appearance: White crystalline powder, odorless, uniform in particle size, no visible impurities, crystalline form stable under normal conditions.
- Melting Point: 215-218 °C (lit.), slight decomposition when heated above melting point.
- Boiling Point: 356 °C (lit.), decomposes before boiling under normal atmospheric pressure.
- Solubility: Slightly soluble in water (0.29 g/100 mL at 20 °C); soluble in hot water, ethanol and DMSO; insoluble in non-polar organic solvents.
- Density: 1.36 g/cm3 (20 °C, lit.), bulk density 400-450 kg/m3.
- Optical Activity: No optical activity, no chiral center, racemic mixture.
- Moisture Absorption: Hygroscopic, easy to absorb moisture when exposed to air for a long time, may cause slight agglomeration.
- Flash Point: ≥110 °C; refractive index n20/D 1.4455 (estimate); pKa: 13.38±0.10 (Predicted); vapor pressure <0.00001 hPa (20 °C).
Chemical Properties
- Chemical Category: Polyol compound, pentaerythritol derivative, also known as DPE, Bis(pentaerythritol), 2,2'-(oxybis(methylene))bis(2-(hydroxymethyl)-1,3-propanediol).
- Stability: Stable under ambient temperature and pressure (sealed); stable in inert gas atmosphere; incompatible with strong oxidants; stable to weak acid and weak alkali, no obvious decomposition.
- Acid-Base Property: Neutral; pH value 5 (2g/L, H2O, 20 °C), no obvious acid-base reaction under normal conditions.
- Hydrolysis: Stable under normal storage conditions; no obvious hydrolysis; can undergo esterification reaction with acids under catalytic conditions.
- Photostability: Relatively stable to light, long-term exposure to strong ultraviolet light will not cause obvious discoloration or decomposition.
- Reactivity: Has multiple hydroxyl groups, easy to undergo esterification, etherification and condensation reactions; non-flammable, non-explosive under normal conditions; temperature 370 °C; low toxicity (LD50 orally in Rabbit: > 2000 mg/kg).
Applications
- Chemical synthesis: Important raw material for the production of polyethers, polyesters, polyurethanes and alkyd resins, used in the synthesis of high-performance polymers.
- Coatings industry: Used in the preparation of high-solid coatings, UV-curable coatings and water-based coatings, improving the weather resistance and durability of coatings.
- Fine chemical field: Used as a raw material for the production of plasticizers, stabilizers and surfactants; can be used to prepare resin films.
- Laboratory research: Used as a research reagent in organic synthesis, polymer chemistry and material science research.
- Other fields: Used as an additive in the production of lubricants, adhesives and composite materials, enhancing product performance.
Storage & Handling
- Storage: Store in a sealed container, placed in a cool, dry, dark and well-ventilated warehouse; away from sunlight, heat and strong oxidants; avoid contact with moisture and air.
- Temperature: Below 30 °C (long-term storage); avoid high temperature and rapid temperature changes; shelf life 12 months under proper storage conditions.
- Packaging: Sealed plastic barrel or aluminum foil bag vacuum packaging (25kg/500g), moisture-proof and sealed to avoid moisture absorption and agglomeration.
- Precautions: Avoid inhalation of dust and direct contact with skin and eyes; wear protective gloves and goggles during operation; rinse with plenty of clean water immediately if contacted accidentally; dispose of waste in accordance with industrial waste regulations; store separately from strong oxidants.
Description
Dipentaerythritol (CAS: 126-58-9) is a polyol compound and pentaerythritol derivative with the chemical formula C??H??O? and molecular weight 254.28. It is a white crystalline powder (purity ≥98.0% HPLC), hygroscopic and low-toxic. It has multiple hydroxyl groups and excellent reactivity, and is widely used as an important raw material in chemical synthesis, coatings, fine chemicals and other fields. It can be prepared by the condensation reaction of pentaerythritol and is also a by-product in the production of pentaerythritol. Store in a sealed, cool and dry place to ensure product stability and avoid agglomeration caused by moisture absorption.
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