Product Name

  • Name

    Solvent Black 3

  • EINECS 224-087-1
  • CAS No. 4197-25-5
  • Density 1.26 g/cm3
  • Solubility Soluble in oils, fats, warm petrolatum, paraffin, phenol, ethanol, acetone, benzene, toluene and hydrocarbon. Insoluble in water.
  • Melting Point 120-124 °C(lit.)
  • Formula C29H24N6
  • Boiling Point 726ºC at 760mmHg
  • Molecular Weight 456.54
  • Flash Point 392.9ºC
  • Transport Information
  • Appearance very dark brown to black fine crystalline powder
  • Safety 24/25-16-37/39-26
  • Risk Codes 11-36/37/38
  • Molecular Structure Molecular Structure of 4197-25-5 (Solvent Black 3)
  • Hazard Symbols FlammableF,IrritantXi
  • Synonyms 1H-Perimidine,2,3-dihydro-2,2-dimethyl-6-[[4-(phenylazo)-1-naphthalenyl]azo]- (9CI);C.I.Solvent Black 3 (7CI,8CI);2,3-Dihydro-2,2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]perimidine;AcetylatedSudan Black B;Aizen SOT Black 6;C.I. 26150;Chuo Sudan Black141;Fat Black HB;Hexatype Black B;Lacquer Black VB;Neptune Black X 60;Oil Black BT;Oil Black HBB;
  • PSA 73.50000
  • LogP 9.67330

Solvent Black 3 Chemical Properties

IUPAC Name: (2,2-Dimethyl-1,3-dihydroperimidin-6-yl)-(4-phenyldiazenylnaphthalen-1-yl)diazene
Synonyms of 1H-Pyrimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)- (CAS NO.4197-25-5): 1H-Perimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthyl)azo)- ; 1H-Perimidine, 2,3-dihydro-2,2-dimethyl-6-(2-(4-(2-phenyldiazenyl)-1-naphthalenyl)diazenyl)- ; 2,3-Dihydro-2,2-dimethyl-6-((1-naphthyl-4-(phenylazo))azo)-1H-perimidine ; C.I. Solvent Black 3 (8CI)  ; C.I. Solvent Black 3
CAS NO: 4197-25-5
Classification Code: Coloring Agents
Molecular Formula: C29H24N6
Molecular Weight: 456.54106
Molecular Structure:

Melting Point: 120-124 °C

Solvent Black 3 Uses

 1H-Pyrimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)- (CAS NO.4197-25-5) is used as biological stain for lipids.

Solvent Black 3 Production

Product Categories about 1H-Pyrimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)- (CAS NO.4197-25-5) are Organics;Solvent Dyestuff.

Solvent Black 3 Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 63mg/kg (63mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#04918,

Solvent Black 3 Consensus Reports

Reported in EPA TSCA Inventory.

Solvent Black 3 Safety Profile

A poison by intravenous route. When heated to decomposition it emits toxic vapors of NOx.
Hazard Codes:
    F: Flammable
    Xi: Harmful 
Risk Statements about 1H-Pyrimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)- (CAS NO.4197-25-5): R11 Highly flammable.
    R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements about 1H-Pyrimidine, 2,3-dihydro-2,2-dimethyl-6-((4-(phenylazo)-1-naphthalenyl)azo)- (CAS NO.4197-25-5): S16 Keep away from sources of ignition.
    S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
    S24/25: Avoid contact with skin and eyes.
    S37/39: Wear suitable gloves and eye/face protection.

Solvent Black 3 Specification

1. Storage: Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
2. Handling: Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
3. Personal Protection: Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
4. Fire Fighting: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

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