1-2-Pentanediol CAS 5343-92-0, 1-2-Pentanediol, CAS 5343-92-0
Reactivity: Participates in esterification and condensation reactions, and is easily oxidized to aldehydes or acids.
5343-92-0
C5H12O2
104.15
226-285-3
| CAS | 5343-92-0 |
| Molecular formula | C5H12O2 |
| Molecular weight | 104.15 |
| EIENCS | 226-285-3 |
| Form | Liquid |
| Melting point | 50.86°C |
| boling point | 206 °C |
| Density | 0.971 g/mL at 25 °C |
| Solubility | miscible |
| PKA | 14.49±0.20(Predicted) |
| Color | Clear colorless to light yellow |
| Storage temp | Keep in dark place,Sealed in dry,Room Temperature |
Molecular formula and structure
Molecular formula: C₅H₁₂O₂
Molecular weight: 104.15 g/mol
Structure: Straight-chain diol (1, 2-dihydroxypentane), containing two adjacent hydroxyl groups.
Appearance: Colorless and transparent liquid with a faint sweet taste. It is stable under light but may turn yellow after long-term storage.
Chemical properties:
Reactivity: Participates in esterification and condensation reactions, and is easily oxidized to aldehydes or acids.
Stability: Stable at room temperature, decomposes when exposed to strong oxidants. The antibacterial property is best when the pH is between 5 and 9.
Cosmetics and personal care (accounting for 45% of the demand
Moisturizer: Small molecule structure penetrates the stratum corneum, increasing water retention rate by 30% (cream, lotion).
Preservative enhancer: Replaces traditional preservatives (such as paraben), reduces the risk of allergies, suitable for baby and maternal products.
Functional additives
Improve the water resistance of sunscreen products (such as adding 15% OFF!) Spray.
Dissolve insoluble active ingredients (such as vitamin C derivatives).
2. Intermediates for pharmaceuticals and pesticides
Propiconazole synthesis: The global annual consumption is 2,000 tons, accounting for 30% of the total demand for 1, 2-pentanediol.
Drug excipients: used as solvents (to enhance the solubility of ibuprofen) or carriers for sustained-release agents.
3. Industrial field
Paint/resin solvent: Replace ethylene glycol, reduce VOCs emissions (water-based paint solubilizer).
Plasticizer: Improves the flexibility of PVC, and its low-temperature resistance is superior to that of phthalates.
4. Emerging applications
Battery electrolyte additives: Enhance the low-temperature performance of lithium-ion batteries, with an annual demand growth rate of over 15%.
Health risk
Irritation: Redness and swelling caused by eye contact (R36/38). Nitrile gloves and goggles must be worn during operation.
Ingestion toxicity: Rat LD₅₀=4743 mg/kg (actually non-toxic), but avoid prolonged skin contact.
Storage requirements
Seal and keep away from light. Temperature < 30℃, humidity < 60%. Keep away from oxidants.
Environmental risk
Biodegradation rate > 90% (28 days), fish LC₅₀ > 1000 mg/L (low toxicity).
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