甲缩醛

甲缩醛用途

【用途一】
用于生产阳离子交换树脂和溶剂等
【用途二】
主要用于生产阴离子效换树脂，也作溶剂和特种燃料。其溶解能力比乙醚、丙酮强，和甲醇和共沸混合物能溶解含氮量高的硝化纤维素。但由于其蒸气有较强麻醉性，不宜作一般溶剂使用，通常作特殊声合的溶剂。还用于香料制造、生产人造树脂，用作格利雅反应和雷帕（合成）反应的反应介质。
【用途三】
主要用于生产阴离子效换树脂，也作溶剂和特种燃料。

甲缩醛名称

[ CAS 号 ]:
109-87-5

[ 中文名 ]:
甲缩醛

[ 英文名 ]:
dimethoxymethane

[中文别名 ]:

[英文别名 ]:

dimethoxy methane
2,4-Dioxapentane
EINECS 203-714-2
Anesthenyl
Formal
dimethyloxymethane
dimethylformaldehyde dimethyl acetal
Methylene Glycol Dimethyl Ether
METHYLAL
Formaldehyde dimethyl acetal,Methylal

甲缩醛物理化学性质

[ 密度 ]:
0.8±0.1 g/cm3

[ 沸点 ]:
45.2±8.0 °C at 760 mmHg

[ 熔点 ]:
-105 °C

[ 分子式 ]:
C₃H₈O₂

[ 分子量 ]:
76.094

[ 闪点 ]:
-17.2±0.0 °C

[ 精确质量 ]:
76.052429

[ PSA ]:
18.46000

[ LogP ]:
-0.26

[ 外观性状 ]:
无色透明液体

[ 蒸汽压 ]:
364.6±0.1 mmHg at 25°C

[ 折射率 ]:
1.348

[ 储存条件 ]:
库房通风低温干燥,与氧化剂,酸类分开储运存放

[ 稳定性 ]:
Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point and wide explosive limits. Incompatible with strong oxidizing agents, strong acids. May form explosive peroxides upon exposure to air.

[ 水溶解性 ]:
32.3 g/100 mL (16 ºC)

甲缩醛MSDS

详细MSDS(安全技术说明书)

甲缩醛毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: PA8750000

CHEMICAL NAME :: Methane, dimethoxy-

CAS REGISTRY NUMBER :: 109-87-5

LAST UPDATED :: 199712

DATA ITEMS CITED :: 35

MOLECULAR FORMULA :: C3-H8-O2

MOLECULAR WEIGHT :: 76.11

WISWESSER LINE NOTATION :: 1O1O1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0536049 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 15000 ppm

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015) Volume(issue)/page/year: 1,73,1974

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 5 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0524346

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 57 gm/m3/7H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,259,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 5708 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PSEBAA Proceedings of the Society for Experimental Biology and Medicine. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1903/04- Volume(issue)/page/year: 29,730,1932

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: >16 mL/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - iritis Lungs, Thorax, or Respiration - other changes Liver - other changes

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0536049 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 35100 mg/m3/7H/22D-I

REFERENCE :: BJIMAG British Journal of Industrial Medicine. (British Medical Journal, Box 560B, Kennebunkport, ME 04046) V.1- 1944- Volume(issue)/page/year: 8,279,1951 *** REVIEWS *** ACGIH TLV-TWA 3110 mg/m3 (1000 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 1000 ppm (3100 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,154,1971 OSHA PEL (Gen Indu):8H TWA 1000 ppm (3100 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 1000 ppm (3100 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 1000 ppm (3100 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 1000 ppm (3100 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-BELGIUM:TWA 1000 ppm (3110 mg/m3) JAN 1993 OEL-DENMARK:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-FINLAND:TWA 1000 ppm (3100 mg/m3);STEL 1250 ppm (3900 mg/m3) JAN 1993 OEL-FRANCE:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-GERMANY:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-POLAND:TWA 1000 mg/m3 JAN 1993 OEL-RUSSIA:STEL 10 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-TURKEY:TWA 1000 ppm (3100 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 1000 ppm (3100 mg/m3);STEL 1250 ppm JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO METHYLAL-air:10H TWA 1000 ppm REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 26075 No. of Facilities: 122 (estimated) No. of Industries: 5 No. of Occupations: 6 No. of Employees: 399 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 26075 No. of Facilities: 9104 (estimated) No. of Industries: 123 No. of Occupations: 70 No. of Employees: 156806 (estimated) No. of Female Employees: 21093 (estimated)

甲缩醛安全信息

[ 符号 ]:

GHS02

[ 信号词 ]:
Danger

[ 危害声明 ]:
H225

[ 补充危害声明 ]:
May form explosive peroxides.

[ 警示性声明 ]:
P210-P370 + P378-P403 + P235

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US)

[ 危害码 (欧洲) ]:
F:Flammable;Xi:Irritant;

[ 风险声明 (欧洲) ]:
R11;R36/37/38

[ 安全声明 (欧洲) ]:
S16-S26-S33-S7/9-S37/39

[ 危险品运输编码 ]:
UN 1234 3/PG 2

[ WGK德国 ]:
1

[ RTECS号 ]:
PA8750000

[ 包装等级 ]:
II

[ 危险类别 ]:
3

[ 海关编码 ]:
2909199090

甲缩醛合成路线

详细合成路线

甲缩醛上下游产品

甲缩醛上游产品

甲缩醛下游产品

甲缩醛制备

1.在浓硫酸催化下，甲醇和甲醛在合成塔中反应。生成的甲缩醛从塔丁馏出，塔丁温度控制在41.5-42℃，从产物中分离未反应的甲醇供循环使用，得含量为85%以上的甲缩醛。每吨产品消耗甲醇1100kg，37%的甲醛1300kg。产品甲缩醛中的杂质主要是甲醇和甲醛，当要求较高纯度时，可用碱性过氧化氢氧化除去甲醛，加金属钠蒸馏可除去甲醇。

精制方法：主要杂质为甲醇和甲醛。少量甲醛可用碱性过氧化氢氧化除去。甲醇用金属钠蒸馏除去。精制时在甲醛除去后用水洗涤，无水碳酸钾或氯化钙干燥，过滤，加金属钠蒸馏。

甲缩醛海关

[ 海关编码 ]: 2909199090

[ 中文概述 ]:
2909199090. 其他无环醚及其卤化衍生物（包括磺化，硝化或亚硝化衍生物）. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ Summary ]:
2909199090. other acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

甲缩醛文献

An easily accessible Re-based catalyst for the selective conversion of methanol: evidence for an unprecedented active site structure through combined operando techniques.

Chem. Commun. (Camb.) 47(14) , 4285-7, (2011)

Heterogeneous Re/SiO(2) catalysts prepared using a one pot sol-gel synthesis were found to display high activity in the direct, selective methanol conversion to methylal, which is correlated to an unp...

Matrix isolation infrared and ab initio study of the conformations of 2,2-dimethoxypropane.

Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 59(7) , 1497-507, (2003)

Conformations of 2,2-dimethoxypropane (DMP) were studied using matrix isolation infrared spectroscopy. An effusive source maintained at different temperatures (298, 388 and 430 K) was used to deposit ...

Ligand close packing, molecular compactness, the methyl tilt, molecular conformations, and a new model for the anomeric effect.

Chemistry 16(12) , 3663-75, (2010)

All the atoms in a molecule attract each other until they reach their equilibrium positions at which point the repulsive forces between the atoms just balance the attractive forces and there are no re...

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甲缩醛