메틸아르손산

한글명:메틸아르손산

카스 번호124-58-3

상품명:METHYLARSONIC ACID

CBNumberCB5678819

분자식CH5AsO3

포뮬러 무게139.97

MOL 파일124-58-3.mol

동의어(한글)

메탄아르손산

메틸아르손산

메틸라소닉산

화학적 성질

녹는점	161°
끓는 점	393.3±25.0 °C(Predicted)
물리적 상태	고체
물리적 상태	단단한 모양
산도 계수 (pKa)	pK1:3.41;pK2:8.18 (18°C)
수용성	218.8g/L(25℃)
IARC	2B (Vol. 100C) 2012
EPA	Methylarsonic acid (124-58-3)

위험 및 안전 성명

유엔번호(UN No.)	2759
위험 등급	6.1(b)
포장분류	III
유해 물질 데이터	124-58-3(Hazardous Substances Data)
독성	mouse,LD50,oral,1800mg/kg (1800mg/kg),Journal of Agricultural and Food Chemistry. Vol. 45, Pg. 449, 1997.

그림문자(GHS)

메틸아르손산 화학적 특성, 용도, 생산

개요
Salts of methanearsonic acid,CH3AsO(OH)2, especially the iron ammonium salt, Neoasozin, used as a fungicide in rice growing and the sodium, ammonium, and diethanolam monium salts used as herbicides in cotton growing.
화학적 성질
Plates from EtOH or Me2CO.Sol in H 2O and EtOH.
용도
Methylarsonic acid is used as herbicide.
위험도
Moderately toxic by ingestion.
잠재적 노출
Methanearsonic acid is an organoarsenic herbicide.
운송 방법
UN3465 Organoarsenic compound, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
Purification Methods
Recrystallise this herbicide from Me2CO or absolute EtOH (white plates; its solubility is 28g/100mL EtOH). [Quick & Adams J Am Chem Soc 44 809 1922, Beilstein 4 H 613, 4 I 577, 4 II 996, 4 III 1822, 4 IV 3682.]
비 호환성
A strong acid. Incompatible with caustics, ammonia, amines, amides, organic anhydrides, isocyanates, vinyl acetate, alkylene oxides, epichlorohydrin. May not be compatible with nitrates. Moisture may cause hydrolysis or other forms of decomposition. Attacks metals in the presence of moisture
폐기물 처리
Do not discharge into drains or sewers. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. If allowed, Incineration with effluent gas scrubbing is recommended. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. Chemical Treatability of Arsenic— (1) Concentration Process: Chemical Precipitation; Chemical Classification: Metal; Scale of Study: Pilot Scale; Type of Wastewater Used: Domestic Wastewater1Pure Compound; Results of Study: 5 ppm @ 4 gpm @ pH 5 7.0. Iron system—90% reduction; low lime system—80% reduction; high lime system—76% reduction; (3 coagulant systems were used; Iron system used 45 ppm as Fe of Fe2(SO4)3 @ pH 5 6.0. Low lime system used 20 ppm Fe of Fe2(SO4)3 and 260 ppm of CaO @ pH 5 10.0. High line system used 600 ppm of CaO @ pH 5 11.5. Chemical coagulation was followed by multimedia filtration); (2) Concentration Process: Chemical Precipitation; Chemical Classification: Metal; Scale of Study: Full Scale Continuous Flow; Type of Wastewater Used: Domestic Wastewater; Results of Study: Effluent character (ppb): 2.5, 56% reduction with lime; 3.3, 24% reduction with lime; (lime dose of 350400 ppm as calcium oxide @ pH 5 11.3)

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