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7778-50-9 - Potassium dichromate, 99% - Potassium bichromate - A18722 - Alfa Aesar

A18722 Potassium dichromate, 99%

CAS 번호
7778-50-9
동의어
Potassium bichromate

사이즈 가격 ($) 수량 재고 여부
500g 43.70
2500g 169.00
장바구니에 추가 대량 견적에 추가 항목 보기

Potassium dichromate, 99%

MDL
MFCD00011367
EINECS
231-906-6

화학적 특성

화학식
Cr2K2O7
화학 식량
294.18
융점
398°
밀도
2.676
용해도
Soluble in water. Insoluble in alcohol.

용도

Potassium dichromate is most often used as an oxidizing agent in laboratories and industries. It is used as a precursor to prepare potassium chrome alum which finds application in leather finishing and tanning. It is utilized in the preparation of chromic acid for cleaning glassware and etching materials. It is an active ingredient in cement used for retards setting and improves its density and texture. Furthermore, it is used in photography and in photographic screen printing. It is also used in wet test analysis as an analytical lab reagent and in ethanol determination.

참고

Incompatible with strong oxidizing agents, reducing agents, strong bases, organic materials, acids, powdered metals, acid anhydrides and hydrazine.

참조 문헌

Optimal conditions have been determined for the oxidation of enamines to ketones in a biphasic ether-water solvent system: Tetrahedron Lett., 36, 2921 (1995).

Can be used catalytically in comblnation with Sodium percarbonate, A16045, as the stoichiometric oxidant under phase transfer conditions, for the oxidation of secondary alcohols to ketones: Synth. Commun., 25, 2349 (1995).

Asakai, T.; Hioki, A. Reliability in standardization of sodium thiosulfate with potassium dichromate. Microchem. J. 2015, 123, 9-14.

Cheng, Z.; Liu, P.; Guo, B.; Qiu, Y.; Xu, P.; Fan, H. Surface Activation of Carbon Paper with Potassium Dichromate Lotion and Application as a Supercapacitor. Appl. Surf. Sci. 2015, 349, 833-838.

GHS 해저드 및 주의 설명서

해저드 설명서 (EU): H272-H301-H312-H330-H314-H334-H317-H340-H350-H360-H372

May intensify fire; oxidizer. Toxic if swallowed. Harmful in contact with skin. Fatal if inhaled. Causes severe skin burns and eye damage. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. May cause genetic defects. May cause cancer. May damage fertility or the unborn child. Causes damage to organs through prolonged or repeated exposure.

주의 설명서: P221-P301+P310a-P303+P361+P353-P304+P340-P305+P351+P338-P320-P405-P501a

Take any precaution to avoid mixing with combustibles. IF SWALLOWED: Immediately call a POISON CENTER/doctor IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Specific treatment is urgent (see label). Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

기타 참조

Merck
14,7627
위험 등급
5.1
포장 그룹
II
통합 관세 코드
2841.50
TSCA(독성물질규제법)"
Yes
RTECS(화학물질 독성 등록)
HX7680000

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