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Dimethylglyoxime

Dimethylglyoxime structure

CAS No:
95-45-4
Formula:
C4H8N2O2
Chemical Name:
Dimethylglyoxime
Synonyms:
2,3-Butanedione,2,3-dioxime;2,3-Butanedione,dioxime;Diacetyl dioxime;Dimethylglyoxime;2,3-Diisonitrosobutane;Chugaev's reagent;Biacetyl dioxime;Reagents,Chugaev's;NSC 9
Categories:
Organic Chemistry > Nitrogen Compounds

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Description

Dimethylglyoxime is white crystalline powder

Dimethylglyoxime Basic Attributes

Molecular Weight：

116.12

Exact Mass：

116.12

BRN：

506731

EC Number：

202-420-1

UNII：

2971MFT1KY

DSSTox ID：

DTXSID2044393

HScode：

29280090

Characteristics

PSA：

65.2

XLogP3：

0.68660

Appearance：

White to off-white Powder

Density：

0.8

Melting Point：

245.5 °C

Boiling Point：

249-295 °C

Flash Point：

14ºC

Refractive Index：

1.487

Water Solubility：

H2O: INsoluble ;soluble in alcohol, acetone, ether

Storage Conditions：

2-8°C

Safety Information

Packing level：

Ⅲ

Transport codes：

UN 2926 6.1(4.1) / PGIII

wgk germany：

hazard class code：

22-20/21/22-25-11

safety instructions：

22-24/25-36-45

RTECS Number：

EK2975000

Marks：

Xn,T,F

Hazard note：

Harmful

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents.

Precautionary statement(s)：

P210-P301 + P310

Hazard Statements：

H228-H301

GHS Classification：

|Danger|H228 (87.27%): Flammable solid [Danger Flammable solids]|P210, P240, P241, P264, P270, P280, P301+P310, P321, P330, P370+P378, P405, and P501|Aggregated GHS information provided by 56 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Drug Information

MeSH Entry Terms：

dimethylglyoxime

Dimethylglyoxime Use and Manufacturing

Methods of Manufacturing

It is derived from the reaction of butanedione-oxime with hydroxylamine-sodium sulfonate. Add diketone-oxime to hydroxylamine-sodium sulfonate solution, heat to 70°C, and keep warm for several hours, precipitate the diketone oxime crystals, filter immediately after cooling, wash with ice water until it no longer contains sulfate , That's it. Hydroxylamine-sodium sulfonate can be prepared as follows: mix sodium nitrite with crushed ice, add a suspension of sodium bisulfite and water while stirring, then add glacial acetic acid from below the liquid surface with stirring, and then add Concentrated hydrochloric acid and crushed ice were added to keep the reaction solution below 0°C. The reaction was acidic with Congo red test paper, and the insoluble precipitate was removed by filtration to obtain hydroxylamine-sodium sulfonate solution.

Uses

Detection and determination of Ni and its separation from Co and many other metals.Forms a scarlet red ppt with Ni even in dil solutions.Separation of Pd from Sn, Au, Rh, and Ir, also to detect Bi with which it forms a bright yellow color and ppt.

Manufacturing Info：

2,3-Butanedione, 2,3-dioxime: ACTIVE

Computed Properties

Molecular Weight:116.12
XLogP3:0.1
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:1
Exact Mass:116.058577502
Monoisotopic Mass:116.058577502
Topological Polar Surface Area:65.2
Heavy Atom Count:8
Complexity:112
Defined Bond Stereocenter Count:2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Urea

Sodium bisulfite

Methyl ethyl ketone

Methyl ethyl ketoxime

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