Chemical Properties Uses Preparation
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Selenium Oxychloride

Chemical Properties Uses Preparation
Product Name
Selenium Oxychloride
CAS No.
7791-23-3
Chemical Name
Selenium Oxychloride
Synonyms
Selenyl chloride;SELENINYL CHLORIDE;seleninyldichloride;SELENIUM OXYCHLORIDE;seleniumchlorideoxide;seleniumoxydichloride;Selenium oxidichloride;SELENIUM(IV) OXYCHLORIDE;SELENIUM OXYCHLORIDE 99%;Selenium (Ⅳ) oxychloride
CBNumber
CB0397694
Molecular Formula
Cl2OSe
Formula Weight
165.87
MOL File
7791-23-3.mol
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Selenium Oxychloride Property

Melting point:
9 °C
Boiling point:
180 °C(lit.)
Density 
2.43 g/mL at 25 °C(lit.)
refractive index 
1.651
Flash point:
176.4°C
solubility 
Miscible with chloroform, carbon disulphide and benzene.
form 
Liquid
color 
Yellow
Specific Gravity
2.42
Water Solubility 
decomposed in H2O to HCl, selenious acid; miscible with CCl4, CHCl3, CS2, benzene, toluene [MER06]
Sensitive 
Moisture Sensitive
Merck 
14,8435
Exposure limits
ACGIH: TWA 0.2 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3
Dielectric constant
46.0
Dielectric constant
46.0
Dielectric constant
46.0
Stability:
Stable, but reacts with water and moisture. Incompatible with water, potassium, phosphorus.
CAS DataBase Reference
7791-23-3(CAS DataBase Reference)
EPA Substance Registry System
Selenium oxychloride (7791-23-3)
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Safety

Hazard Codes 
T,N
Risk Statements 
14-23/25-33-35-50/53
Safety Statements 
26-36/37/39-45-60-61-28-20/21
RIDADR 
UN 2879 8/PG 1
WGK Germany 
3
RTECS 
VS7000000
TSCA 
Yes
HazardClass 
8
PackingGroup 
I
HS Code 
28121099
Hazardous Substances Data
7791-23-3(Hazardous Substances Data)
Toxicity
LD50 s.c. in rabbits: 7 mg/kg (Wilber)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H373May cause damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P314Get medical advice/attention if you feel unwell.

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N-Bromosuccinimide Price

Alfa Aesar
Product number
068108
Product name
Selenium dichloride oxide, 99% (metals basis)
Packaging
10ml
Price
$336
Updated
2024/03/01
Alfa Aesar
Product number
068108
Product name
Selenium dichloride oxide, 99% (metals basis)
Packaging
25ml
Price
$623.65
Updated
2024/03/01
Strem Chemicals
Product number
93-3408
Product name
Selenium dichloride oxide, 97%
Packaging
5g
Price
$77
Updated
2024/03/01
Strem Chemicals
Product number
93-3408
Product name
Selenium dichloride oxide, 97%
Packaging
25g
Price
$312
Updated
2024/03/01
American Custom Chemicals Corporation
Product number
API0004152
Product name
SELENIUM OXYCHLORIDE
Purity
95.00%
Packaging
5G
Price
$864.74
Updated
2021/12/16
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Selenium Oxychloride Chemical Properties,Usage,Production

Chemical Properties

Selenium Oxychloride is a colorless to yellow, fuming liquid. Insoluble in water and denser than water.  Selenium Oxychloride is toxic and extremely vesicant. When 0.01 cc is applied to the skin of rabbits,death occurs in less than 24 hours. It readily destroys skin on contact, causing third-degree burns unless immediately removed with water.

The first record of the use of selenium oxychloride in organic reactions dates back to the year 1879, when Friedrich Clausnizer1 obtained acetic anhydride by treating acetic acid with this reagent.
Selenium oxychloride may be used as a reagent for the preparation of α-chloro ketones.Selenium oxychloride is miscible in CCl4, carbon disulfide and benzol.
It is used as a solvent, chlorinating agent and resin plasticizer.

Uses

Selenium oxychloride is a solvent for synthetic phenolic resins and many other substances.

Preparation

Selenium oxychloride may be prepared by several methods: (1) by passing chlorine gas into a suspension of selenium dioxide in carbon tetrachloride, (2) by heating thionyl chloride, SOCl2, with selenium dioxide, (3) by dehydration of dichloroselenious acid, H2Se(Cl2)O2, and (4) by fusion of selenium dioxide, selenium, and calcium chloride.

Chemical Properties

Selenium oxychloride is a colorless to yellowish liquid. Fumes in air.

Physical properties

Pale yellow or colorless liquid; corrosive; refractive index 1.651 at 20°C; density 2.42 g/mL at 22°C; freezes at 8.5°C; boils at 176.4°C; decomposes at 176.4°C; decomposes in water forming hydrochloric acid and selenious acid; soluble in carbon disulfide, carbon tetrachloride, chloroform, benzene, and toluene.

Uses

Selenium(IV) chloride oxide is used as a polar solvent for synthetic phenolic resins. It is also used to prepare selenium oxybromide and selenium nitride. It acts as a chlorinating agent.

Uses

selenium oxychloride is used as solvent.

Production Methods

Selenium oxychloride (SeOCl2) is a powerful solvent, chlorinating agent, and resin plasticizer used in the chemical industry.

General Description

A colorless to light-colored liquid. Insoluble in water and denser than water. Contact may severely irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make other chemicals.

Air & Water Reactions

Fumes in air. Insoluble in water and denser than water. Decomposed in water or moist air to form hydrochloric acid and selenious acid [Merck 11th ed. 1989].

Reactivity Profile

Red phosphorus reacts in the cold with SELENIUM OXYCHLORIDE evolving light and heat; white phosphorus reacts explosively [Mellor 10:906 1946-47]. When potassium is brought into contact with SELENIUM OXYCHLORIDE in the cold, an explosion occurs [Mellor 10:908 1946-47]. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291]. Powdered antimony ignites on contact with the chloride, [Mellor, 1947, Vol. 10, 906]. With metal oxides, i.e. silver oxide, light is evolved and heat sufficient to decompose the mixture, [Mellor, 1947, Vol. 10, 909].

Hazard

Extremely hazardous, toxic irritant, poison, severe vesicant.

Health Hazard

SELENIUM OXYCHLORIDE is very toxic and may cause death or permanent injury after very short exposures to small quantities. Inhalation of small quantities may be corrosive and irritating to the respiratory tract. It can burn and irritate the skin and eyes and cause burns when ingested. Long-term exposure to selenium compounds may be a cause of amyotrophic lateral sclerosis in humans. Populations at special risk include those with a history of dermatitis, chronic bronchitis, skin allergies, respiratory tract infections, liver or kidney disease, jaundice, or albuminuria. Women of child-bearing age are also considered at risk.

Fire Hazard

When SELENIUM OXYCHLORIDE is heated to decomposition, or in contact with acids or acid fumes, highly toxic chloride and selenium fumes are evolved. Hydrochloric acid and selenious acid are produced by reaction with water. Decomposed by water. Reacts violently with powdered antimony, red and white phosphorus, disilver oxide, lead oxides, and potassium. Avoid water, moist air.

Safety Profile

Poison by skin contact and subcutaneous routes. Human systemic effects by skin contact with very small amounts: primary irritant, corrosive. Explodes on contact with potassium, white phosphorus. Ignites on contact with antimony. Vigorous reaction with metal oxides (e.g., silver oxide, lead@) oxide, lead(Ⅳ) oxide, lead(II)(IV) oxide). When heated to decomposition it emits very toxic fumes of Cland Se. See also SELENIUM COMPOUNDS and CHLORIDES.

Potential Exposure

This material is used as a solvent for many substances, including metals and as a chlorinating agent; and resin plasticizer; as an ionizing solvent; for monochlorination of ketones.

Shipping

UN2879 Selenium oxychloride, Hazard class: 8; Labels: 8-Corrosive material, 6.1-Poisonous material.

Incompatibilities

Water and air reactive releasing strong acids. The aqueous solution is a strong acid and oxidizer.Reacts violently with bases, reducing agents, hydrides, powdered antimony, red, and white phosphorus, disilver oxide, lead oxide; powdered metals, and potassium. Note: Never pour water into this substance; when dissolving or diluting always add it slowly to the water

Selenium Oxychloride Preparation Products And Raw materials

Raw materials

Preparation Products

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Selenium Oxychloride Suppliers

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15839
Advantage
69
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
Thermo Fisher Scientific
Tel
800-810-5118
Fax
+86-10-84193589
Email
cnchemical@thermofisher.com
Country
China
ProdList
17770
Advantage
75
Shanghai Meishui Chemical Technology Co., Ltd
Tel
021-60549325 18616193163
Fax
021-33250306
Country
China
ProdList
4526
Advantage
56
Chengdu HuaXia Chemical Reagent Co. Ltd
Tel
400-1166-196 13458535857
Fax
QQ:800101999
Email
cdhxsj@163.com
Country
China
ProdList
13350
Advantage
58
Sigma-Aldrich
Tel
021-61415566 800-8193336
Email
orderCN@merckgroup.com
Country
China
ProdList
51456
Advantage
80
Guangzhou Jhd Chemical Reagent Co., Ltd.
Tel
020-84383047
Fax
020-84380294
Email
sales@jhd.com.cn
Country
China
ProdList
9186
Advantage
65
Shanghai ChuCheng Trade Co., Ltd.
Tel
021-5983532 15201998618
Fax
021-59833275
Email
3002724020@qq.com
Country
China
ProdList
4616
Advantage
58
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Tel
+86-400-002-6226 +86-13028896684;
Email
sales@rrkchem.com
Country
China
ProdList
56902
Advantage
58
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View Lastest Price from Selenium Oxychloride manufacturers

Zhuozhou Wenxi import and Export Co., Ltd
Product
SELENIUM OXYCHLORIDE 7791-23-3
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-08-11

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