What is Acid Orange 67 CAS 12220-06-3?

Acid Orange 67, also called C.I. Acid Orange 67 or C.I. 14172, is a water-soluble anionic azo dye with molecular formula C26H21N4NaO8S2 and EINECS 235-406-9. It is supplied as an orange to reddish-orange powder for textile and metal-finishing applications.

Which fibers is Acid Orange 67 mainly used to dye?

It is most often used on nylon and other polyamide fibers, including swimwear, activewear, hosiery, and similar textiles. It is also suitable for protein fibers such as wool and silk, where it provides even coverage and preserves a soft hand feel.

Is Acid Orange 67 a leveling or milling acid dye?

Acid Orange 67 is generally considered a weak acid or half-milling dye. It gives better wet fastness than simple leveling dyes, but normally needs a mildly acidic dye bath and a suitable leveling agent to achieve uniform exhaustion.

What pH and fastness conditions suit Acid Orange 67?

It is stable in acidic to neutral dye baths, typically around pH 3.0-6.5, and performs well at elevated dyeing temperatures. Light fastness is commonly around ISO 5-6, with moderate to good washing fastness, depending on substrate and dyeing method.

Acid Orange 67 CAS 12220-06-3

Acid Orange 67, also called C.I. Acid Orange 67 or C.I. 14172, CAS 12220-06-3, is a water-soluble anionic azo dye supplied for textile dyeing and printing. Confirm the required shade, strength and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 12220-06-3
Synonyms: C.I. Acid Orange 67, C.I. 14172, Weak Acid Yellow RXL, Triacid Fast Milling Yellow 3RL, Kayanol Yellow N3R, Acid Yellow RXL
Einecs: 235-406-9
Molecular Formula: C₂₆H₂₁N₄NaO₈S₂
Grade: Textile printing and dyeing chemicals
Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.

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Product Description

Acid Orange 67 CAS 12220-06-3 is a water-soluble anionic azo dye, also known as C.I. Acid Orange 67 or C.I. 14172, with molecular formula C26H21N4NaO8S2, molecular weight about 604.57 and EINECS 235-406-9.

Synonyms: C.I. Acid Orange 67; C.I. 14172; Weak Acid Yellow RXL; Triacid Fast Milling Yellow 3RL; Kayanol Yellow N3R; Acid Yellow RXL.

CAS: 12220-06-3.

It has the molecular formula C26H21N4NaO8S2 and a molecular weight of about 604.57 g/mol.

It appears as an orange to yellow-orange powder.

It is a weak acid or half-milling dye, giving better wet fastness than simple leveling dyes.

It is stable in acidic to neutral dye baths, typically around pH 3.0–6.5, and performs well at elevated dyeing temperatures.

It is mainly used to dye nylon and other polyamide fibers such as swimwear, activewear and hosiery.

It is also suitable for coloring wool and silk in selected applications.

Acid dyes such as Acid Orange 67 can color anodized aluminum by penetrating the porous oxide layer created during anodizing.

Its light and wet fastness properties make it useful for textiles requiring good color retention.

Formulators should match the dye strength and shade to the target fiber and processing conditions.

Store in a cool, dry, well-ventilated area in tightly closed containers away from strong oxidizers.

Protect from moisture and direct sunlight to maintain shade and strength consistency.

Confirm appearance, shade, strength, moisture, heavy metals and residual solvent limits as required.

Use dust masks or respirators and eye protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required shade, strength and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Acid Orange 67 CAS 12220-06-3?

A: Acid Orange 67, also called C.I. Acid Orange 67 or C.I. 14172, is a water-soluble anionic azo dye with molecular formula C26H21N4NaO8S2 and EINECS 235-406-9. It is supplied as an orange to reddish-orange powder for textile and metal-finishing applications.
Q:
Which fibers is Acid Orange 67 mainly used to dye?

A: It is most often used on nylon and other polyamide fibers, including swimwear, activewear, hosiery, and similar textiles. It is also suitable for protein fibers such as wool and silk, where it provides even coverage and preserves a soft hand feel.
Q:
Is Acid Orange 67 a leveling or milling acid dye?

A: Acid Orange 67 is generally considered a weak acid or half-milling dye. It gives better wet fastness than simple leveling dyes, but normally needs a mildly acidic dye bath and a suitable leveling agent to achieve uniform exhaustion.
Q:
Can Acid Orange 67 be used to color anodized aluminum?

A: Yes. Acid dyes such as Acid Orange 67 can color anodized aluminum by penetrating the porous oxide layer created during anodizing. The dye is then sealed into the coating, producing a durable orange-gold finish.
Q:
What pH and fastness conditions suit Acid Orange 67?

A: It is stable in acidic to neutral dye baths, typically around pH 3.0-6.5, and performs well at elevated dyeing temperatures. Light fastness is commonly around ISO 5-6, with moderate to good washing fastness, depending on substrate and dyeing method.

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