甲縮醛
Methylal
CAS No:109-87-5 UN No：1234 GB ：31031
本企業(yè)生產(chǎn)的新產(chǎn)品甲縮醛由甲醇和甲醛在催化劑作用下，進(jìn)行合成反應(yīng)，然后經(jīng)蒸餾而得。年生產(chǎn)能力5000噸，產(chǎn)品質(zhì)量穩(wěn)定可靠。產(chǎn)品暢銷國內(nèi)外市場。
化學(xué)名稱：二甲氧基甲烷、甲縮醛二甲醇
英文名稱：Formaldehyde dimethyl acetal、Dimethoxymethane
結(jié)構(gòu)式： CH2(OCH3)2
分子式： C3H8O2
分子量： 76.1
理化性質(zhì)：
甲縮醛為無色透明液體。有類似氯仿氣味。熔點(diǎn)：—104.8℃，沸點(diǎn)： 42.3℃。相對密度0.8593（20/4℃）；折射率1.3534；閃點(diǎn)—18℃，自燃點(diǎn)237℃，能與醇、醚、丙酮混溶，16℃時在水中的溶解度為32.3%，水在甲縮醛中溶解度為4.3%。
質(zhì)量指標(biāo)：
項(xiàng) 目 技 術(shù) 指 標(biāo)
外 觀 無色透明液體
甲縮醛含量 % ≥ 85
甲醛含量 % ≤ 15
水 % ≤ 0.5
產(chǎn)品用途：
由于甲縮醛具有優(yōu)良的理化性能，即良好的溶解性、低沸點(diǎn)、與水相溶性好，與醇、醚、丙酮等混溶；能溶解樹脂和油類，溶解能力比乙醚、丙酮強(qiáng)；和甲醇的共沸混合物能溶解含氮量高的硝化纖維素；16℃時在水中溶解32.3%（WT）；水在甲縮醛中溶解4.3%(WT)。根據(jù)甲縮醛的溶解特性，它可作為部分鹵素?zé)N溶劑的代用品；與許多溶劑的互溶性好，尤其是與LPG、DME的相溶性比較好，且沸點(diǎn)低，對提高氣霧劑的蒸氣壓和霧化率是極有利的；甲縮醛具有優(yōu)良的水溶性，為開發(fā)水基型氣霧劑提供了很好的發(fā)展前景。因此甲縮醛能廣泛應(yīng)用于化妝品、藥品、家庭用品、工業(yè)汽車用品、殺蟲劑、皮革上光劑、橡膠工業(yè)、油漆、油墨等產(chǎn)品中，也由于甲縮醛具有良好的去油污能力和揮發(fā)性，作為清潔劑可以替代F11和F113及含氯溶劑，也是替代氟里昂，減少揮發(fā)性有機(jī)物（VOCs）排放，降低對大氣污染的環(huán)保產(chǎn)品。
包裝、運(yùn)輸和貯存：
玻璃瓶外木箱或鈣塑箱加固內(nèi)襯墊料或鐵桶包裝。危險(xiǎn)品專用槽車散裝運(yùn)輸。
儲存于陰涼、通風(fēng)的倉間內(nèi)，遠(yuǎn)離高熱、火種，避免陽光直射；與氧化劑和含鹵素的碳?xì)浠衔锔綦x儲運(yùn)。
安全事項(xiàng)：
甲縮醛是極易燃液體，其蒸氣與空氣混合，能形成爆炸性混合物。遇高熱、明火及強(qiáng)氧化劑易引起燃燒。與氧化劑接觸發(fā)生猛烈反應(yīng)性。接觸空氣或光照條件下可生成具有潛在爆炸危險(xiǎn)性的過氧化物。
本品對黏膜有刺激性，有麻醉作用。吸入蒸汽可引起鼻和喉刺激；高濃度吸入出現(xiàn)頭暈等。對眼有損害，損害可持續(xù)數(shù)天。長期皮膚接觸可致皮膚干燥。
購買時請索取《甲縮醛安全技術(shù)說明書》。
Methylal
CAS No :109-87-5 UN No: 1234 GB: 31031
The production of new products methylal from methanol and formaldehyde in the catalyst, the synthesis reaction, and then obtained by distillation. 5000 tons annual production capacity, product quality is stable and reliable. Product best-selling domestic and foreign markets.
Chemical Name:: Formaldehyde dimethyl acetal, Dimethoxymethane
Structural formula: CH2 (OCH3) 2
Molecular Formula: C3H8O2
Molecular weight: 76.1
Physical and chemical properties:
Methylal a colorless transparent liquid. Chloroform has a similar odor. Melting point: -104.8 ℃, Boiling point: 42.3 ℃. Relative density of 0.8593 (20 / 4 ℃); refractive index 1.3534; flash point -18 ℃, self-ignition point 237 ℃, with alcohol, ether, acetone immiscibility, 16 ℃, when the solubility in water for 32.3%, water at a acetal solubility was 4.3%.
Quality indicators:
Technical indicators
Appearance colorless transparent liquid
Methylal content% ≥ 85
Formaldehyde content%≤ 15
Water% ≤ 0.5
Product Usage:
Methylal because of excellent physical and chemical properties, namely good solubility, low boiling point, good miscibility with water, with alcohol, ether, acetone, etc. immiscibility; soluble resin and oil, dissolving capacity than the ether, acetone strong; and methanol azeotrope high soluble nitrogen content of nitrocellulose; 16 ℃, when dissolved in water and 32.3% (WT); water methylal dissolved at 4.3% (WT). According to methylal dissolution characteristics, which can be used as part of hydrocarbon solvents, halogen substitutes; much solvent immiscible with good, especially with LPG, DME is better for Histocompatibility and low boiling point, to improve the aerosol steam pressure and atomization rate is extremely favorable; methylal have excellent water solubility, for the development of water-based aerosol provides a good development prospects. Methylal can therefore widely used in cosmetics, pharmaceuticals, household goods, industrial automotive supplies, pesticides, leather polish, rubber industry, paints, inks and other products, but also because of methylal go oil has a good capacity and volatile, as a cleaning agent can replace the F11 and F113 and the chlorine-containing solvents, Freon is an alternative to reduce the volatile organic compounds (VOCs) emissions and reduce air pollution in environmentally friendly products.
Packaging, transport and storage:
Glass bottles outside the wooden box lined with reinforced packing or drum packaging. Dangerous goods in bulk tankers dedicated transport.
Stored in a cool, ventilated room warehouse, away from heat, fire, avoid direct sunlight; with halogen containing oxidant and the isolation storage and transportation of hydrocarbons.
Security matters:
Methylal are extremely flammable liquid, its vapor mixed with air, can form explosive mixtures. Case of high fever, open flame and strong oxidants easily cause combustion. Happen violent contact with the oxidant reactivity. Exposed to air or light conditions can generate potentially dangerous explosive peroxides.
This product has irritation of the mucous membrane, has anesthetic effects. Steam inhalation can cause nose and throat stimulation; high concentration of respirable dizziness and so on appear. Eye there is damage, damage to sustainable few days. Long-term skin contact can cause dry skin.
Ask for MSDS when needed.
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