730-40-5

Name	DISPERSE ORANGE 3
CAS	730-40-5
EINECS(EC#)	311-984-9
Molecular Formula	C12H10N4O2
MDL Number	MFCD00007856
Molecular Weight	242.23
MOL File	730-40-5.mol

Chemical Properties

Appearance	red to dark brown powder
Melting point	~200 °C (dec.)(lit.)
Boiling point	385.06°C (rough estimate)
density	1.2532 (rough estimate)
refractive index	1.6081 (estimate)
Colour Index	11005
form	Powder
pka	2.78±0.10(Predicted)
color	Red to dark brown
Water Solubility	290.7ug/L(25 ºC)
BRN	1842907
Contact allergens	Disperse Orange 3 is an azo dye that can induce contact dermatitis in workers in the textile industry. It is positive in a great majority of PPD-positive people, because of hydrolysis in the skin into PPD. Disperse Orange 3 can also be found in some semipermanent hair dyes. less more
CAS DataBase Reference	730-40-5(CAS DataBase Reference)
EPA Substance Registry System	C.I. Disperse Orange 3 (730-40-5)

Safety Data

Hazard Codes	Xi
Risk Statements	R36/37/38:Irritating to eyes, respiratory system and skin . R43:May cause sensitization by skin contact. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36/37:Wear suitable protective clothing and gloves . less more
WGK Germany	3
HS Code	32041100

Raw materials And Preparation Products

Hazard Information

Chemical Properties

red to dark brown powder

Definition

ChEBI: Azobenzene substituted at the phenyl 4-positions by an amino and a nitro group.

Description

Disperse orange 3 is an azo dye which can induce contact dermatitis in workers in the textile industry. Patch tests are frequently positive (about 30%) in hairdressers with a hand dermatitis. It is probably an indicator of contact sensitization to PPD, but disperse orange 3 can also be found in so me semipermanent hair dyes.

Uses

Disperse Orange 3 may be used as a test material for investigating its degradation by the white rot fungus?Pleurotus ostreatus and the products obtained upon degradation are determined using UV-visible spectrophotometric and high-performance liquid chromatographic techniques.

Uses

Disperse orange 3 is used as a dye in acetate, nylon, silk, wool, and cotton; stocking dye.

Preparation

4-Nitrobenzenamine diazo, with aniline base armour sulfonic acid coupling, and sodium hydroxide solution to boil, then a sulfonic acid hydrolysis off base.

General Description

Disperse Orange 3 (DO3) is a monoazo dye, which contains 90% dye content plus dispersing agents and surfactants. It has two aromatic rings with an amino group on one of the rings and the other is substituted with a nitro group. It shows an absorption peak majoring at 415 nm.

Properties and Applications

Orange, yellow light red powder, melting point of 210-220 ℃. Soluble in ethanol, acetone, toluene, soluble fiber element. The strong sulfuric acid for green light yellow to orange diluted; Nitric acid solution for orange red; In strong hydrochloric acid for brown in the light yellow. Used for polyester and acetic acid fiber dyeing, also can be used for nylon 66 and acrylic fiber dyeing and plastic shading.

Standard	Ironing Fastness		Light Fastness	Persperation Fastness		Washing Fastness
Standard	Fading	Stain	Light Fastness	Fading	Stain	Fading	Stain
ISO	4	2	5-6	4-5	5	4-5	3-4

Spectrum Detail

Well-known Reagent Company Product Information

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