▸Cosmetic colorant: Orange shade in formulated personal-care products
▸Hair dye: Non-reactive dye in hair-coloring products
▸Biological stain: Staining reagent in laboratory use
▸Industrial dye: Colorant for compatible systems
Physical Properties
Physical Description
Orange-brown solid; Dark red powder
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
D&C Orange No. 4 (C.I. Acid Orange 7 / Orange II, CI 15510, CAS 633-96-5), a monoazo acid dye. Industry references record use as a dye, a cosmetic colorant including non-oxidative and oxidative hair dyes, and a biological stain. Supplied as an orange powder.
Frequently Asked Questions
What is D&C Orange No. 4?
D&C Orange No. 4 (CAS 633-96-5; C.I. Acid Orange 7 / Orange II, CI 15510) is a monoazo acid dye supplied as an orange powder. It is used as a dye, a cosmetic colorant including in hair dyes, and a biological stain.
What is D&C Orange No. 4 used for?
It is used as an orange colorant in formulated personal-care products, as a non-reactive dye in hair-coloring products, as a biological stain in laboratory use, and as an industrial colorant for compatible systems.
What is the difference between FD&C and D&C colorants?
FD&C and D&C are color-additive naming categories distinguished by their permitted application scopes; D&C Orange No. 4 carries the D&C designation. The label refers to the naming convention, not a quality grade.
What other names does D&C Orange No. 4 go by?
D&C Orange No. 4 is also known as C.I. Acid Orange 7, Orange II, and CI 15510. The CAS number is 633-96-5 and the formula is C16H11N2NaO4S.
How is D&C Orange No. 4 supplied in bulk?
RawSource supplies D&C Orange No. 4 as an orange powder in bulk packaging. Request a current CoA and SDS to confirm dye content and specifications, along with a bulk quote for your volume.
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.
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