蜜桃视频一区二区三区在线观看|国产一区二区三区中文在线|性做久久久久久久久不卡_Sodium fluoride--Suqian Tongshi Reagent Co.,Ltd.

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Sodium fluoride

Molecular formula

NaF

Molecular weight

41.99

CAS NO

7681-49-4

Characters

White crystal powder

Use

Used as screening agent and fusing agent.

Specification

Excellent grade pure, Analytically pure , chemically pure

Executive standard

GB/T 1264-1997

Technical index

Name	Excellent grade pure(%)	Analytically pure (%)	Chemically pure(%)
Content(NaF)	≥99.0	≥98.0	≥98.0
Clarity test	qualified	qualified	qualified
Water undissolved substance	≤0.01	≤0.05	≤0.1
loss on drying	≤0.3	—	—
Acidity(H+),mmol/100g	≤2.5	≤5.0	≤10.0
Alkalinity(OH-),mmol/100g	≤1.0	≤2.0	≤4.0
Chloride(Cl)	≤0.002	≤0.005	≤0.01
Sulfate(SO₄)	≤0.01	≤0.03	≤0.05
Fluosilicate (SiF₆)	≤0.1	≤0.6	≤1.2
Ferrum(Fe)	≤0.002	≤0.005	≤0.005
Heavy metal(Pb)	≤0.001	≤0.003	≤0.005

Packing

500kg for bottle packing, 40kg for pail packing, 25kg for paper plastic packing

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