Chengdu chang yuan shun co.,Ltd.`
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maleic anhydride
1, Specification of maleic anhydride Quality standards:GB3676-92 exellent product : Molten colority, No(plantinum-cobalt) <=25; content(as MA) >=99.5; crystallizing point >=52.4; ash <=0.005; PPm iron content (as Fe) <=5 2, Package With plastic woven lined with double-layer of PE bag. 25kg per ba....
Listed by: Chengdu chang yuan shun co.,Ltd.` (China)
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fumaric acid
1, The specification of the fumaric acid. appearance: white or light yellow crystalline powder. industry grade content(as dry) , % >=99.0 colority(APHA) , <= 20 melting point , ° >=286 moisture, % <=0.5 ash , % <=0.1 heavy metal (as Pb) <=10.0 arwenic (as AS) ....
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benzene
GB/T2283-93 (1) appearance:Appearence:clear liquid, free from sediment or haze at 18~25 oC. Its color is not darker than that of solution of 0.03g of potassium dichromate in 1000 ml of water. (2) Retalative density(20oC) , g/cm3: 0.875~0.880 (3) Total distillation range(101325 pa atmosphere) <= 0.8(including 80.....
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toluene
1, Toluene: GB/T2284-93 (1) Appearence:clear liquid, free from sediment or haze at 18~25oC. Its color is not darker than that of solution of 0.003g of potassium dichromate in 1000 ml of water. (2) Retalative density(20oC) , g/cm3: 0.860~0.870 (3) Total distillation range(101325 pa atmosphere) <= 2.0(including1....
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xylene
10oC Xylene GB/T2285-93 (1) appearance:Appearence:clear liquid, free from sediment or haze at 18~25 oC. Its color is not darker than that of solution of 0.03g of potassium dichromate in 1000 ml of water. (2) Retalative density(20oC) , g/cm3: 0.840~0.870 (3) Total distillation range(101325 pa atmosphere) <= 2.0(....
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L-malic acid
Quality Standards: GB13737-92 content (asC4H6O5) %>=99.0 specific optical rotation -1.6~-2.6 sulfate[SO42-]% <=0.03 chloride[CL-] <=0.005 arsenic (asAs) % <=0.0002 heavy metal (asPb) % <=0.0002 residue on ignition% <=0.10 oxide OK clariyy OK Packing and Storage Packing with round paperboard drum lined w....
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