麻花传媒剧在线mv观看免费,一级a一级a爱片免费免免,三AAAAAA级黄片性奴,亚洲三级aV多人轮换,一级a一级a爱片免费免免,三AAAAAA级黄片性奴,亚洲三级aV多人轮换

聯(lián)系我們
石家莊市裕華區(qū)翟營南大街39號,新界商務(wù)北樓1單元808室
電話:0311-68090739
傳真:0311-68090739
您的位置:首頁 > 產(chǎn)品展示 Ammonium Persulphate technical grade
Ammonium Persulphate technical grade
Specifications: Index NameIndexExcellent gradeFirst-rate ProductStandard ProductAppearancewhite crystalline powderwhite crystalline powderwhite crystalline powderAmmonium Persulfate (NH4)2S2O8, % ≥98.598.398.0Heavy Metal ( Pb),% ≤0.00050…

 

Specifications:

Index Name

Index

Excellent grade

First-rate Product

Standard Product

Appearance

white crystalline powder

white crystalline powder

white crystalline powder

Ammonium Persulfate (NH4)2S2O8, % ≥

98.5

98.3

98.0

Heavy Metal ( Pb),% ≤

0.0005

0.0010

0.0015

Iron (Fe),% ≤

0.0005

0.0010

0.0015

Manganese (Mn),% ≤

0.00005

0.0001

0.0002

Residue on Ignition,% ≤

0.02

0.05

0.10

Free Acid (as H2SO4),% ≤

0.10

0.10

0.15

Active Oxygen, % ≥

6.9

6.89

6.87

Moisture,% ≤

0.10

0.15

0.20

Uses:

1. used to produce persulfates.
2. used to produce aniline dyes, and as oxidation chromogenic agent of vat dyes.
3. used in the surface treatment of oxidized metals.
4. used in the organic synthesis industry, as initiator of macromolecular polymerization.
5. used in the decoloring and bleaching of oil, cleaning and deodorization of deteriorated barm, as ripener of wheat.
6. used as additive for under-well fracturing in petroleum exploitation.

Precautions during Storage and Use:
Ammonium persulfate is a kind of non-inflammable product, but it has combustion-supporting action because it can release oxygen, therefore, it should be stored under certain conditions. First, it should be stored in dry and closed container; Second, it should keep away from sunlight, heat sources and moisture; Moreover, some impurities such as defilement, rust, some metals and reducers can cause the decomposition of ammonium persulfate, therefore, these matters should be paid attention to during storage and use. Because the moist ammonium persulfate powder and its aqueous solution have bleaching and slight corrosiveness, the operate should avoid eyes, skins or clothing direct contacting with it.

Packing:

①25Kg plastic woven bag

② 25Kg carton

③ 1000Kg woven bags

④ 25Kg PE bag