Anti-Counterfeiting & Authentication Solutions

Fluorescent Pigments & Dyes

Yellow fluorescent powder under UV light
vertical bar in purple with checkers

Angstrom Technologies, Inc. specializes in providing invisible fluorescent pigments and dyes that can be used in a variety of media and substances for your security, anti-counterfeiting, and authentication needs.

The Power of Invisible Taggants

Our UV fluorescent pigments are effectively used in various media to provide covert security or process control features. When we integrate our compounds with materials such as inks, varnishes, plastics, and adhesives they are undetectable in natural lighting.

These products serve as invisible taggants that can be integrated with printable inks, transparent overcoats, adhesives, and plastics. Common uses for our fluorescent compounds include: document security and proof of authenticity, anti-counterfeiting, process control in manufacturing, access control at venues, and many other applications.

Featured Fluorescent Pigments & Dyes

Our high-quality fluorescent pigments and dyes are invisible under normal light and require UV light to be seen or detected. In addition, some materials require exposure to specific shortwave UV excitation to be detectable. These materials are designed for integration with a wide variety of materials such as inks, varnishes, plastics and adhesives. Our products have a wide variety of uses and are an excellent choice for document security, process control and other applications.

In addition to these longwave and shortwave fluorescent materials, Angstrom Technologies, Inc., also offers a selection of other luminescent pigments and dyes that include:

  • Visible fluorescent compounds
  • IR (infrared) emitting compounds
  • Phosphorescent compounds

Fluorescent Pigments & Dyes

See the LF rating and more for each of our fluorescent pigments and dyes. LF refers to the lightfastness of a product—an indication of the durability/stability of a material when exposed to light over time. Our LF rating scale ranks 1.0 as the least lightfast and 10.0 as the most.

SC-112

SC-25

SC-6

SC-4

SC-158

SC-5

SC-30

SC-32 (SW)

SC-27

SC-19

SC-12

SC-17

SC-10

SC-20 (SW)

SC-31 (SW)

PC-47 (Phosph)

SC-7

SC-65

SC-18

SC-11

SC-10

SC-20 (SW)

SC-31 (SW)

PC-47 (Phosph)

SC-18

SC-7

SC-65

SC-11

Manufacturing and 3D printing

Industries

Industries We Serve

At Angstrom Technologies, Inc., our technology and solutions are used in a wide range of products across a variety of industries. Our pigments and dyes can be found in food labels, government documents, concert tickets, and more.

We’re dedicated to helping you keep your products secure. Learn more about our OVP products, services, and custom solutions.

Neon red powder in UV light

SC-112

Type: Organic Pigment

Appearance: White to off white powder

UV Excitation Color: Red

Fluorescence Emission: 610-616 nm

LF Rating: 7.0

Particle Size: D90v >150 µm

Features: The SC 112 is a premier organic fluorescent pigment. This is an excellent choice for high security applications. The SC 112 has excellent durability attributes.

Neon orange powder in UV light

SC-25

Type: Organic Pigment

Appearance: Off white powder

UV Excitation Color: Red

Fluorescence Emission: 612-618 nm (excitation @ 365 nm)

LF Rating: 3.0

Particle Size: D90v < 150 µm

Features: SC 25 is one of our brightest red organic fluorescent pigments. The SC 25 can be used as a dye in toluene, acetone, and alcohols. 

 

SC-6

Type: Organic Pigment

Appearance: Off white to light yellow powder

UV Excitation Color: Yellow

Fluorescence Emission: 546-555 nm (excitation @ 365 nm)

LF Rating: 9.2

Particle Size: D90v < 150 µm

Particle Size Milled Version (SC-6M): D90v < 15 µm

Features: SC 6 is an invisible yellow fluorescent pigment.  It is insoluble in most solvents.  This was our first high security pigment qualifying for use in Passports in 1991.  This is a slightly red shifted yellow with excellent durability.  SC 6 is utilized in many high security applications worldwide.

Neon green powder in UV light

SC-4

Type: Organic Pigment

Appearance: Off white powder

UV Excitation Color: Green

Fluorescence Emission: 503-512 nm (excitation @ 365 nm)

LF Rating: 10.0

Particle Size: D90v < 150 µm

Particle Size Milled Version (SC-4M): D90v < 15 µm

Features: SC 4 is an invisible green fluorescent pigment.  It is insoluble in most solvents.  SC 4 is an excellent choice for high security applications due to its superior lightfastness, proven durability and uniquely identifiable spectral properties.

Light green powder excited by UV light

SC-158

Type: Organic Pigment

Appearance: White to off white powder

UV Excitation Color: Turquoise

Fluorescence Emission: 478-488 nm (excitation @ 365 nm)

LF Rating: N/A

Particle Size: D90v < 150 µm

Features: SC 158 is an invisible turquoise fluorescent pigment.  It is insoluble in most solvents.  This is a unique fluorescent color from a single pigment.  This is not a blend of more than one pigment.  SC 158 is an exciting new addition to our high security pigments as there are few options in this color space

Light blue powder in UV light

SC-5

Type: Organic Pigment

Appearance: Yellow to light green powder

UV Excitation Color: Blue

Fluorescence Emission: 443 – 452 nm (excitation @ 365 nm)

LF Rating: 6.0

Particle Size: D90v < 150 µm

Particle Size Milled Version (SC-5M): D90v < 15 µm

Features: Organic Blue Emitting Pigment. SC 5 is an excellent choice for security and process control applications. SC 5 can also be used as a dye in toluene, acetone, mineral oil and alcohols. If you are not sure if SC 5 will work for your application please reach out with specific questions. 

Dark red powder in UV light

SC-30

Type: Organic Dye

Appearance: Yellow to orange powder

UV Excitation Color: Red

Fluorescence Emission: 610-616 nm (excitation @ 365 nm)

LF Rating: >1

Particle Size: N/A (Dye)

Features: SC 30 is an organic fluorescent dye, it is soluble in IPA. SC-30 can be used as a pigment in other media. 

Reddish-Orange powder in UV light

SC-32

Type: Shortwave Only Inorganic Pigment 

Appearance: Off-white powder

Shortwave UV Excitation Color: Red

Fluorescence Emission: 614-622 nm @ 254-300 nm, fluorescence emission intensity may decrease with a decrease on particle size

LF Rating: N/A

Particle Size: D90v < 150 µm

Features: SC 32 is a “shortwave only” emitting inorganic pigment. Blending SC 32 with other fluorescent materials can offer unique bi-fluorescent printed security features.  The durability and cost of this material is favorable for a wide range of security applications.

Yellow powder in UV light

SC-27

Type: Organic Pigment

Appearance: White to off white powder.

UV Excitation Color: Yellow

Fluorescence Emission: 544-554 nm (excitation @ 365 nm)

LF Rating: 8.5

Particle Size: D90V < 150 µm

Particle Size Milled Version (SC-27M): D90V < 15 µm

Features: SC 27 is an invisible yellow fluorescent pigment.  It is insoluble in most solvents.  SC 27 is an excellent choice for high security applications due to its superior lightfastness, durability and high intensity.  This yellow fluorescent pigment is used today in high value, high security documents in many countries.

Light green powder in UV Light 3

SC-19

Type: Organic Pigment

Appearance: White to off-white

UV Excitation Color: Yellow-Green

Fluorescence Emission: 527-536 nm (excitation @ 365 nm)

LF Rating: 10.0

Particle Size: D90v < 150 µm

Particle Size Milled Version (SC-19M): D90v < 15 µm

Features: SC 19 is a yellow-green fluorescent pigment. The SC 19 is slightly soluble in some solvents. This material is also available in a milled version with a smaller particle size.

SC-12

Type: Blue UV Dye

Appearance: Yellow powder

UV Excitation Color: Blue

Fluorescence Emission: 465-475 nm

LF Rating: 2.3

Particle Size: N/A Dye

Features:  SC 12 is a blue UV dye that is a cost effective material at an excellent price point. SC-12 is FDA approved for indirect food contact.

Blue powder in UV light 2

SC-17

Type: Organic Pigment

Appearance: White to off-white powder

UV Excitation Color: Blue

Fluorescence Emission: 439-447 nm (excitation @ 365 nm)

LF Rating: 2.3

Particle Size: D90v < 150 µm

Features: SC 17 is an organic blue fluorescent pigment. It is an excellent choice for use in process control applications. It is non-migratory in polypropylene films.

Red powder in UV light

SC-10

Type: Organic Pigment

Appearance: White to off white

UV Excitation Color: Red

Fluorescence Emission: 610-615 nm (excitation @ 365 nm)

LF Rating: 8.9

Particle Size (Milled): D90V < 15 µm

Features: SC 10M is an invisible red/magenta fluorescent pigment with little to no solubility in solvents.  This pigment is known to have superior lightfastness as well as other high durability attributes.  This is a premier high security pigment in the red color space and is priced accordingly.

Orange powder in UV light

SC-20

Type: Shortwave Only Organic Dye/Pigment 

Appearance: White Powder

Shortwave UV Excitation Color: Red

Fluorescence Emission: 613-619 nm (excitation @ 254 nm)

LF Rating: N/A

Particle Size: D90v < 150 µm

Features: SC 20 is one of our “shortwave only” fluorescent dye materials.

Light green powder in UV light

SC-31

Type: Shortwave Only Inorganic Pigment 

Appearance: Off-white powder

Shortwave UV Excitation Color: Green

Fluorescence Emission: 525-532 nm (excitation @ 254 nm), fluorescence emission intensity decreases with decrease of particle size

LF Rating: N/A

Particle Size: D90v < 150 µm

Features: SC 31 is an invisible green fluorescent pigment.  This is a “shortwave only” fluorescent pigment, meaning it reacts to shortwave UV (centered at 254nm).  This pigment will have little to no fluorescence in the longwave UV region (centered at 365nm).  Blending SC 31 with other fluorescent materials can offer unique printed security features.  The durability and cost of this material is favorable for a wide range of security applications.

Green powder in UV light

PC-47

Type: Phosphorescent Inorganic Pigment

Appearance: Light to light yellow

UV Excitation Color: Green

Fluorescence Emission: 200 nm – 450 nm

LF Rating: N/A

Particle Size: D50 = 2.5 ± 1 μm, D90 = ≤ 12 μm

Features: PC 47 is an inorganic, invisible phosphorescent pigment.  It is insoluble.  The low, uniform particle size of this pigment enables it to be printed by conventional means.  PC 47 is a Strontium Illuminate Phosphorescent material meaning the afterglow is a very long duration.

Blue powder in UV light

SC-7

Type: Organic Water Soluble Dye

Appearance: Light yellow powder

UV Excitation Color: Blue

Fluorescence Emission: 430-440  nm in water at 0.2%(excitation @ 365 nm)

LF Rating: 2.4* 

Particle Size: N/A (Dye)

Features: SC 7 is an organic blue emitting pigment/dye. The SC 7 is used in a variety of process control applications. The SC 7 is a completely water-soluble dye.

Red powder in UV light

SC-65

Type: Organic Pigment

Appearance: White to off white powder

UV Excitation Color: Red 

Fluorescence Emission: 615-620

LF Rating: 6.7

Particle Size: D90v >150 µm

Features: SC 65 is an invisible red fluorescent pigment.  It is insoluble in most solvents.  It is suitable for security applications and exhibits good intensity.

Fluorescent powder turning purple 2

SC-18

Type: Solvent Soluble Dye

Appearance: White to off white

UV Excitation Color: Blue

Fluorescence Emission: 436-447 nm (excitation @ 365 nm)

LF Rating: 1.4

Particle Size: N/A (Dye)

Features: SC 18 is an invisible fluorescent Dye.  It is soluble in many solvents but it is not water soluble.  This is a low cost option for high volume security applications like lottery tickets and tax stamps.  It has good emission at higher wavelengths enabling the use of inexpensive lights to illuminate the feature for verification.

Fluorescent powder turning purple

SC-11

Type: Inorganic Pigment

Appearance: White Powder

UV Excitation Color: Blue

Fluorescence Emission: 440-447 nm (excitation @ 365 nm)

LF Rating: N/A

Particle Size: D90v < 150 µm

Features: SC 11 is an inorganic blue fluorescent pigment.  It is insoluble in nearly all solvents.  This blue fluorescent pigment exhibits very good heat resistance.  It is a good candidate for lamination applications.