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중크롬산나트륨
SODIUM DICHROMATE DIHYDRATE
화학식 :Na2Cr2O7.2H2O; Cr2H4Na2O9
CAS.NO :7789-12-0
메이커 :미국
순도 :100%
포장 :25KG/Bag
별명 :Disodium dichromate dihydrate; Sodium bichromate; 나트륨디크롬산(2수화물); 디나트륨디크롬산(2수화물); 중크롬산나트륨(2수화물); 중크롬산소다(2수화물); 중소다
구매수량 :
개
총 금액 :
견적의뢰하기
상세페이지
 
Na2Cr2O7 ×2H2O 100 % Min.
Sulfate as SO4 0.20 % Max.
Chloride as Cl 0.04 % Max.
Vanadium as V 0.003 % Max.
 
 
 

Physical Properties:

Chemical Names Sodium Bichromate Dihydrate (Common Name)

Sodium Dichromate Dihydrate (Technical Name)

Formula Na2Cr2O7 ×2H2O

Color Bright Orange Crystals

Molecular Weight 298.00

Behavior on Heating Loses water of crystallization at 84.6°C (184.2°F).

Anhydrous salt melts at 356.7°C (674.1°F).

Decomposes above 400°C (752°F).

Density 2.35 @ 25°C

Bulk Density

Loose 77 lb./cu. ft. (average)

Tapped 90 lb./cu. ft. (average)

Solubility Highly soluble in water (74.0% @ 25°C)

Heat of Solution Endothermic (-28.2 cal./g. ; -50.8 BTU/lb.)

Stability in Air At 25°C deliquesces at relative humidities above 51%

pH @ 25°C 3.0 - 4.6 depending on concentration

Transition in Solution 84.6°C (184.2°F)


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