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Magneson

Magneson structure

CAS No:
74-39-5
Formula:
C12H9N3O4
Chemical Name:
Magneson
Synonyms:
1,3-Benzenediol,4-[2-(4-nitrophenyl)diazenyl]-;Resorcinol,4-[(p-nitrophenyl)azo]-;1,3-Benzenediol,4-[(4-nitrophenyl)azo]-;4-[2-(4-Nitrophenyl)diazenyl]-1,3-benzenediol;Magneson I;p-Nitrobenzeneazoresorcinol;2,4-Dihydroxy-4′-nitroazobenzene;p-Diazoviolet;Magneson;4-[(4-Nitrophenyl)azo]-1,3-benzenediol;p-(2,4-Dihydroxyphenylazo)nitrobenzene;4-(4-Nitrophenyl)azoresorcinol;4-(p-Nitrophenylazo)resorcinol;NSC 3914;Diazo Violet;123502-51-2;1888411-20-8
Categories:
Chemical Reagents > Organic Reagents

Description

dark red to brown crystalline powder

4-(4-nitrophenylazo)resorcinol is an azobenzene in which the phenyl rings are 4-nitro- and 2,4-dihydroxy-substituted respectively. It is a member of resorcinols, a C-nitro compound and a member of azobenzenes.

Magneson Basic Attributes

Molecular Weight：

259.22

Exact Mass：

259.22

BRN：

674709

EC Number：

200-808-5

UNII：

YND5ZT5BS3

NSC Number：

3914

HScode：

2927000090

Characteristics

PSA：

111.00000

XLogP3：

2.82

Appearance：

Orange-red to red Powder

Density：

1.5±0.1 g/cm3

Melting Point：

200 °C

Boiling Point：

509.2±33.0 °C at 760 mmHg

Flash Point：

261.7±25.4 °C

Refractive Index：

1.666

Water Solubility：

soluble in dilute sodium hydroxide. Insoluble in water.

Storage Conditions：

Store below +30°C.

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

hazard class code：

36/38

safety instructions：

26-36

RTECS Number：

VH2810000

Marks：

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents, strong bases.

GHS Classification：

|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 46 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Drug Information

MeSH Entry Terms：

azoviolet

Magneson Use and Manufacturing

Methods of Manufacturing

Dissolve 138 g of p-nitroaniline in 250 ml of hot concentrated hydrochloric acid, cool to 0-5 °C, and drop into a saturated aqueous solution containing 85 g of nitrous acid with stirring, the temperature does not exceed 5 °C. Then 100 g of resorcinol and dilute alkaline solution were added to this diazonium salt solution. The coupling product is filtered, dried and recrystallized with alcohol to obtain p-nitrobenzene azoresorcinol.

Uses

For the detection of magnesium with which it yields a bright blue color in alkaline solution.Also used to determine molybdenum with which it forms a red-violet complex:Nikitina, Andrianova, C.A. 75, 136789v (1971).

Manufacturing Info：

1,3-Benzenediol, 4-[2-(4-nitrophenyl)diazenyl]-: ACTIVE

Computed Properties

Molecular Weight:259.22
XLogP3:2.8
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:2
Exact Mass:259.05930578
Monoisotopic Mass:259.05930578
Topological Polar Surface Area:111
Heavy Atom Count:19
Complexity:336
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Resorcinol

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