Selenium dioxide

Saccharin sodium

Selenium dioxide paramete

CAS No.: 7446-08-4
MF: O2Se
Place of Origin: Shandong, China
Purity: 99%min
Application: Used as oxidant and catalyst
Model Number: P-CAS 7446-08-4
Heavy metals: 10ppm max
Chloride: 200ppm max
Residue on ignition: 0.1%max
Other Names: Selenium dioxide
EINECS No.: 231-957-4
Grade Standard: Industrial Grade, Reagent grade
Appearance: White Powder
Brand Name: LOOKCHEM
Loss on drying: 0.5%Max
Package: 25kg/drum
Sample: Available
Certificate: ISO9001:14001


Item Speciations
Selenium Dioxide ≥98.0 %
Hydrochloric acid insoluble ≤  0.02 %
Fe ≤  0.002 %
Loss on drying ≤ 1.0%
Selenate and sulphate ≤ 0.1 %
Water dissolution test eligible Eligible
Cl ≤ 0.005%
Heavy Metal  ≤ 0.06%


1.It is used for the preparation of high purity selenium and other selenium compounds, and is also an oxidant and catalyst for the organic synthesis of drugs

2.It is used as raw material for organic compound oxidant, catalyst, chemical reagents and various inorganic selenium compounds. It is also used in copiers, rectifiers, etc.

3.Manufacture of other selenium compounds, alkaloid assay, oxidant. It reacts with ammonia to form nitrogen and selenium, and in alcohol solution to form ethylammonium selenite [NH4(C2H5)SeO3], and hydrazine to form nitrogen and black amorphous selenium, and hydroxylamine hydrochloride to form nitrogen and red-brown amorphous selenium, and nitric acid to form selenite.

Product service

1. Certificate Of Analysis (COA)

2. Material Safety Data Sheet (MSDS)

3. Route of synthesis (ROS)

4. Method of Aanlysis (MOA)

5. Nuclear Magnetic Resonance (NMR)

6. Packing pictures and loading video before loading

7. Free Sample

8. Factory audit


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Q1: Do you accept sample order?
A:  We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Q2:  What is our advantage?
A : The series of natural extracted product are all self-developed, produced and tested. Mature production technology, strict cost control, and perfect quality assurance system, ensure the product stability and competitive price.
Q3: What’s your MOQ?
A :  Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4: Do you supply product report?
A : Yes. We'll give you product analysis report before shipping.
 Q5: Is there a discount?
A :  Different quantity has different discount.
Q6: Can we visit your factory?
A :  Yes. Welcome to visit.
Q7: How to confirm the Product Quality before placing orders?
A :  You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.


Signal :Danger

H301 (99.58%): Toxic if swallowed [Danger Acute toxicity, oral]

H331 (97.07%): Toxic if inhaled [Danger Acute toxicity, inhalation]

H373 (99.58%): Causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

H400 (47.28%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

H410 (100%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]


Low temperature, ventilated, dry warehouse, and oxidant, strong acid, food raw materials stored separately


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.



Packing can be conducted according to customers' requirements.

Delivery detail

   [Delivery] 5 working days after payment.

Selenium dioxide picture

Packaging and shipping

Honor Certificate

Professional team