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四甲基氢氧化铵

四甲基氢氧化铵用途

【用途一】
用作极谱分析试剂
【用途二】
用作计算机硅片面的光亮剂、触刻剂等
【用途三】
在电子行业中，广泛用作硅晶片蚀刻剂、清洗剂、正胶显影剂等

四甲基氢氧化铵名称

[ CAS 号 ]:
75-59-2

[ 中文名 ]:
四甲基氢氧化铵

[ 英文名 ]:
Tetramethylammonium hydroxide

[中文别名 ]:

[英文别名 ]:

AR-300-49
tetreamethyl ammonium hydroxide
nmw-w
MFCD00008280
TMAH
TRITONNE
Developer
ocg945
TMNOH
AZ-300MIF

四甲基氢氧化铵物理化学性质

[ 密度 ]:
0.866 g/mL at 25 °C

[ 沸点 ]:
110 °C

[ 熔点 ]:
°C

[ 分子式 ]:
C₄H₁₃NO

[ 分子量 ]:
91.152

[ 闪点 ]:
80 °F

[ 精确质量 ]:
91.099716

[ PSA ]:
23.06000

[ LogP ]:
0.14560

[ 外观性状 ]:
无色结晶（常含三、五等结晶水），熔点68-71℃，极易吸潮，在空气中能迅速吸收二氧化碳，130℃时分解为甲醇和三甲胺，通常使用有10％；25％水（或醇）溶液和含结晶水化合物。

[ 蒸汽压 ]:
17.5 mm Hg ( 20 °C)

[ 折射率 ]:
n20/D 1.384

[ 储存条件 ]:
2-8°C

[ 稳定性 ]:
Stable. Flammable. Incompatible with strong oxidizing agents, strong acids.

四甲基氢氧化铵MSDS

四甲基氢氧化铵毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: PA0875000

CHEMICAL NAME :: Methanaminium, N,N,N-trimethyl-, hydroxide

CAS REGISTRY NUMBER :: 75-59-2

LAST UPDATED :: 199710

DATA ITEMS CITED :: 9

MOLECULAR FORMULA :: C4-H12-N.H-O

MOLECULAR WEIGHT :: 91.18

WISWESSER LINE NOTATION :: 1K1&1&1 &Q

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 19 mg/kg

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

REFERENCE :: JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 28,367,1926

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 1 mg/kg

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

REFERENCE :: 85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,688,1948

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

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 25 mg/kg

TOXIC EFFECTS :: Skin and Appendages - dermatitis, other (after systemic exposure)

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: OTS0570994

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Parenteral

SPECIES OBSERVED :: Amphibian - frog

DOSE/DURATION :: 5 mg/kg

TOXIC EFFECTS :: Vascular - BP elevation not characterized in autonomic section

REFERENCE :: 85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,688,1948

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Unreported

SPECIES OBSERVED :: Amphibian - frog

DOSE/DURATION :: 1515 ug/kg

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

REFERENCE :: 85IXA4 "Structure et Activite Pharmacodyanmique des Medicaments du Systeme Nerveux Vegetatif," Bovet, D., and F. Bovet-Nitti, New York, S. Karger, 1948 Volume(issue)/page/year: -,681,1948 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - A1009 No. of Facilities: 48 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 48 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - A1009 No. of Facilities: 105 (estimated) No. of Industries: 6 No. of Occupations: 16 No. of Employees: 6413 (estimated) No. of Female Employees: 1446 (estimated)

四甲基氢氧化铵安全信息

[ 符号 ]:

GHS02, GHS05, GHS06, GHS08, GHS09

[ 信号词 ]:
Danger

[ 危害声明 ]:
H226-H300 + H310-H314-H331-H370-H372-H411

[ 警示性声明 ]:
P260-P264-P273-P280-P301 + P310-P302 + P350

[ 靶器官 ]:
Liver, thymus gland

[ 个人防护装备 ]:
Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter

[ 危害码 (欧洲) ]:
T:Toxic; C:Corrosive;

[ 风险声明 (欧洲) ]:
R20/21/22;R34

[ 安全声明 (欧洲) ]:
S45-S36/37/39-S26-S16-S36/37

[ 危险品运输编码 ]:
UN 3286 3/PG 2

[ WGK德国 ]:
1

[ RTECS号 ]:
PA0875000

[ 包装等级 ]:
II

[ 危险类别 ]:
3

[ 海关编码 ]:
2923900090

四甲基氢氧化铵合成路线

四甲基氢氧化铵上下游产品

四甲基氢氧化铵上游产品

四甲基氢氧化铵下游产品

四甲基氢氧化铵制备

四甲基氢氧化铵的制备方法很多，一般采用氧化银法，通过四甲基氯化铵与氧化银反应生成。但该法制备四甲基氢氧化铵的工艺复杂，原料氧化银价格昂贵，而且所得产品含较高的杂质离子，如卤素离子、碱金属离子等，用于有机硅单体催化聚合时，严重影响有机硅产品特性，更无法满足电子领域清洗和腐蚀的要求。
国外从七十年代开始采用电解法制备四甲基氢氧化铵的新工艺，并逐步取代氧化银法。用电解法制得的产品质量较好，成本低，不仅能满足有机硅生产的需要，而且进入了电子工业领域。

四甲基氢氧化铵海关

[ 海关编码 ]: 2923900090

[ 中文概述 ]:
2923900090 其他季铵盐及季铵碱。监管条件:无。增值税率:17.0%。退税率:9.0%。最惠国关税:6.5%。普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ Summary ]:
2923900090 other quaternary ammonium salts and hydroxides。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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