Melting Point482 to 500 °F (decomposes) (NTP, 1992)
Physical Description · 3 items
P-methylaminophenol sulfate is an off-white crystalline solid. Sensitive to light. (NTP, 1992)
Off-white crystalline solid; [CAMEO] White to beige odorless solid; [EC] Beige crystalline solid; [Aldrich MSDS]
WHITE CRYSTALS.
Autoignition Temperature531 °C
Physicochemical properties
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification · 6 items
Warning
H302: Harmful if swallowed [Warning Acute toxicity, oral]
P260, P261, P264, P270, P272, P273, P280, P301+P317, P302+P352, P319, P321, P330, P333+P317, P362+P364, P391, and P501 (click each P-code to see the statement)
Warning
H302 (99.6%): Harmful if swallowed [Warning Acute toxicity, oral]
P260, P261, P264, P264+P265, P270, P272, P273, P280, P301+P317, P302+P352, P305+P351+P338, P319, P321, P330, P333+P317, P337+P317, P362+P364, P391, and P501 (click each P-code to see the statement)
4-(Methylamino)phenol sulphate: Does not have an individual approval but may be used under an appropriate group standard
Other Safety InformationIMAP assessments - p-Methylaminophenol and its sulfate: Human health tier II assessment
DOT LabelClass 9
Fire Hazards · 2 items
Flash point data for this compound are not available but it is probably combustible. (NTP, 1992)
Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.
Health HazardsSYMPTOMS: Symptoms of exposure to this compound may include irritation of the eyes and skin, nausea, weakness, cyanosis, vertigo, headache, convulsions and rarely coma.
Hazards Summary · 1 item
Allergic contact dermatitis in photographers; [Marks] An eye, respiratory tract, and mild skin irritant; A skin sensitizer; May have effects on the blood; [ICSC] Toxic by ingestion: nausea, weakness, cyanosis, vertigo, headache, and convulsions; [CAMEO] Causes somnolence, tremor, and changes in urine composition in oral lethal-dose studies of mice; Causes acute tubular necrosis and increased spleen weights in repeated, oral-dose studies of rats; [RTECS] 3% solution is not irritating to skin and mildly irritating to eyes; [EC] See N-Methyl-4-aminophenol.
Chemistry & industry
Uses & manufacturing
Uses · 3 items
CIR ingredient: p-Methylaminophenol Sulfate
Used to develop black-and-white photographs; [Kanerva, p. 1816] Used as photographic developer and to dye furs; [Merck Index] Used in oxidative hair dyes; [EC]
Photographic Processing [Category: Other]
Household ProductsInformation on 19 consumer products that contain p-Methylaminophenol sulfate in the following categories is provided:
Use ClassificationCosmetics -> Hair dyeing
General Manufacturing InformationPhenol, 4-(methylamino)-, sulfate (2:1): ACTIVE
Applications · 6 items
DescriptionMetol is contained in black-and-white film developers and caused contact dermatitis in photographers.
UsesMetol is a black-and-white photographic developer; dyeing furs; as pigment in hair dyes.
Uses4-(Methylamino)phenol sulfate is a photographic developer used in black and white photography. It is also used as tone developers in developing agents. Further, it is used in oxidative hair dye formulations.
Uses4-methylaminophenol sulfate is used as a photographic developer and fur dye.
UsesPhotographic developer; dyeing furs.
General DescriptionOff-white crystalline solid. Sensitive to light.
UN ClassificationUN Hazard Class: 9; UN Pack Group: III
Reactivity Profile · 1 item
In aqueous solution behaves as an acid. Materials in this group are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Chemical DangersDecomposes on heating. This produces toxic fumes including nitrogen oxides and sulfur oxides. Reacts with acids, acid anhydrides, acid chlorides and oxidants.
Physical DangersDust explosion possible if in powder or granular form, mixed with air.
Safety & protection
Fire Fighting · 2 items
Fires involving this compound should be controlled using a dry chemical, carbon dioxide, foam or Halon extinguisher. (NTP, 1992)
Use water spray, powder, alcohol-resistant foam, carbon dioxide.
First Aid Measures · 4 items
Fresh air, rest. Refer for medical attention.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth. Give one or two glasses of water to drink.
First Aid · 1 item
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
Safe StorageSeparated from incompatible materials. See Chemical Dangers.
Nonfire Spill Response · 1 item
SMALL SPILLS AND LEAKAGE: If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a strong soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Spillage Disposal · 1 item
Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.
Isolation and EvacuationExcerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]:
Eye PreventionWear safety goggles or eye protection in combination with breathing protection.
Fire PreventionNO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.
Inhalation RiskNo indication can be given whether a harmful concentration in the air will be reached.
Exposure PreventionPREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
Toxicology
Adverse EffectsSkin Sensitizer - An agent that can induce an allergic reaction in the skin.
Exposure RoutesThe substance can be absorbed into the body by ingestion.
Toxicity SummarySafe in the present practices of use and concentration. Ingredient, concentration, and use information are available in documents discoverable at https://cir-reports.cir-safety.org
Signs and Symptoms · 3 items
Cough. Sore throat.
Redness.
Redness. Pain.
ICSC Environmental DataThe substance is very toxic to aquatic organisms.
Safety data
F
8
PPE
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
wgk
3
tsca
TSCA listed
rtecs
SL8650000
ridadr
UN 3077 9/PG 3
hs_code
29222900
risk_code
22-43-48/22-50/53
Signal word
Warning
Symbol(GHS)
GHS07,GHS08,GHS09
hazard_code
Xn,N
safety_code
36/37-46-60-61
hazard_class
6.1
Storage Class
11 - Combustible Solids
packing_group
III
Hazard statements
H302-H317-H373-H410
Limited Quantities
5.0 kg (11 lbs) (solid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
