The colors in fireworks used on the Fourth of July and at other times are produced predominantly by metal salts, including strontium and lithium (red), copper (blue), and barium (green). But fireworks may also contain organic compounds that color the smoke that they produce.
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Among these is solvent blue 36, aka oil blue A, blue AP, and other names. It is an anthraquinone dye that is also used in polystyrene and acrylic resins and in liquids such as oils and inks. It gives smoke a bluish-violet color. Its cousin solvent blue 35 has n-butyl instead of isopropyl groups and is also used to color smoke.
So this Fourth, when you see blue smoke coming from fireworks, think of the solvent blues!
Color Index: Solvent Blue 36
C.I.No.
CAS -37-5
EC No. 238-101-9
Chemical Family Anthraquinone Series
Chemical Formula C20H22N2O2
TechnicalProperties:
Solvent Blue 36 is an red fluorescent dye. It has excellent heat resistance and light resistance, good migration resistance and high tinting strength with wide application. Solvent Blue 36 is used for coloring for plastics, PS, ABS, PMMA, PC, PET, polymer.
Color Shade：
Application: (“☆” Superior, “○” Applicable, “△” Notrecommend)
PS
HIPS
ABS
PC
RPVC
PMMA
SAN
AS
PA6
PET
☆
○
△
△
☆
☆
○
△
-
-
PhysicalProperties
Density(g/cm3) Melting Point(℃)Lightfastness
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（inPS）
RecommendedDosage Transparent Nontransparent0.31
167
6-7
0.025
0.05
Light Fastness: Consist of 1st to 8th grade, and the 8th grade is superior, the 1st grade is bad.
The heat resistance in PS can reach to260℃
Degree of pigmentation: 0.05% dyes+0.1%titanium dioxide R
Solvent blue 36 solubility in organic solvent at20℃(g/l)
Acetone ButylAcetate Methylbenzene Dichloromethane Ethylalcohol28.4
32.8
67
133
6.8
Note:Theaboveinformationisprovidedasguidelinesforyourreferenceonly. The accurate effects should base on the test results inlaboratory.
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Customer Notification
Applications
Presol Dyes are comprised with a wide rage of polymer soluble dyes which can be used for coloring a wide variety of plastics. They are normally used via masterbatches and add into fiber, film and other plastic products.
When using Presol Dyes into engineering plastics with strict processing requirements, such as ABS, PC, PMMA, PA, only specific products are recommended.
When using Presol Dyes into thermo-plastics, we suggest to mix and disperse the dyes sufficiently together with the right processing temperature to achieve better dissolution. In particular, when using high melting point products, such as Presol R.EG (Solven Red 135), a full dispersion and suitable processing temperature will contribute to a better coloration.
High performance Presol Dyes are complaint with the global regulations in below applications:
● Food packaging.
● Food-contacted application.
● Plastic toys.
QC and Certification
1) Powerful R&D strength makes our technique in a leading level, with standard QC system meet EU standard requirements.
2) We have ISO & SGS certificate. For those colorants for sensitive applications, such as food contact, toys etc., we can support with AP89-1, FDA, SVHC, and regulations according to EC Regulation 10/.
3) The regular tests involve Color Shade, Color Strength, Heat Resistance, Migration, Weather Fastness, FPV(Filter Pressure Value) and Dispersion etc.
Packing and Shipment
1) Regular Packings are in 25kgs paper drum, carton or bag. Products with low density will be packed into 10-20 kgs.
2) Mix and different products in ONE PCL, increase the working efficiency for customers.
3) Headquartered in Ningbo or Shanghai, both are large ports which are convenient for us provide logistics services.
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