123-91-1
1,4-Dioxane
CAS: 123-91-1;28347-88-8;28347-91-3;39449-24-6;54841-74-6
Molecular Formula: C4H8O2
123-91-1 - Names and Identifiers
123-91-1 - Physico-chemical Properties
| Molecular Formula | C4H8O2 |
| Molar Mass | 88.10512 |
| Melting Point | 12℃ |
| Boling Point | 131.7°C at 760 mmHg |
| Flash Point | 22.3°C |
| Water Solubility | SOLUBLE |
| Vapor Presure | 11.2mmHg at 25°C |
| Use | It is used as a solvent for cellulose acetate, resin, vegetable oil, mineral oil, soluble dyes, etc., and is used for making paint, varnish, plasticizer, lubricant, etc. |
123-91-1 - Risk and Safety
| Hazard Symbols | F - Flammable Xn - Harmful  |
| Risk Codes | R11 - Highly Flammable R19 - May form explosive peroxides R36/37 - Irritating to eyes and respiratory system. R40 - Limited evidence of a carcinogenic effect R66 - Repeated exposure may cause skin dryness or cracking |
| Safety Description | S16 - Keep away from sources of ignition. S36/37 - Wear suitable protective clothing and gloves. S46 - If swallowed, seek medical advice immediately and show this container or label. S9 - Keep container in a well-ventilated place. |
| UN IDs | UN 1165 |
123-91-1 - Upstream Downstream Industry
| Downstream Products | 4-Methyl-5-(2-acetoxyethyl)thiazole |
123-91-1 - Nature
Open Data Verified Data
colorless liquid. With a fragrance of esters. Can be miscible with water and a variety of organic solvents. Flammable, its vapor and air can form an explosive mixture, in the case of open flame, high heat or contact with the oxidant, there is a risk of combustion explosion. A strong reaction with an oxidizing agent can occur. Exposure to air or under light conditions can generate peroxides with a potential risk of explosion.
Last Update：2024-01-02 23:10:35
123-91-1 - Preparation Method
Open Data Verified Data
The crushed sodium hydroxide was added to the industrial dioxane to remove acidic substances and moisture. The solid matter is filtered off and then subjected to distillation to obtain pure dioxane.
Last Update：2022-01-01 09:25:04
123-91-1 - Use
Open Data Verified Data
solvent for chromatographic analysis, a common solvent for non-aqueous titration. It is also a solvent for cellulose acetate and its derivatives.
Last Update：2022-01-01 09:25:05
123-91-1 - Safety
Open Data Verified Data
LD50 mouse 5.7mg/kg. There is anesthesia and irritation, exposure to large amounts of steam caused by eye and upper respiratory tract irritation. Accumulation in the body, can cause liver, kidney damage, and even uremia. If contact with the skin, eyes, should be immediately rinsed with water. Store in a cool, ventilated warehouse. Keep away from fire and heat source. The bin temperature should not exceed 30 ℃. Protection from direct sunlight. Avoid contact with oxidants, reductants, halogens. Packaging is required to be sealed and not to be in contact with air. Should not be stored for a long time to avoid deterioration.
Last Update：2022-01-01 09:25:05
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