Petroleum naphtha

  • Naphtha, petroleum
Formula
Unspecified
Description
Colorless liquid with the odor of gasoline.
Uses
Solvent in paintermediate & varnish industry, medicinal agent-counterirritant.

Registry Numbers and Inventories.
CAS
8030-30-6
EC (EINECS/ELINCS)
232-443-2
EC Index Number
649-262-00-3
EC Class
Carcinogenic Category 2; Harmful
RTECS
DE3030000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Human Data; Primary Irritant
UN (DOT)
1256
Merck
12,7329
Beilstein/Gmelin
NA
Swiss Giftliste 1
G-3715
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Melting point, °C
<-73
Boiling point, °C
110
Vapor pressure, mmHg
7
Vapor density (air=1)
2.5
Density
0.74 g/cm3 (20 C)
Solubility in water
Insoluble
Surface tension
19-23 g/s2
Heat of vaporization
0.325 kJ/g

Hazards and Protection.
Storage
Keep tightly closed in a cool place and away from fire.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. All five-gallon pails and larger metal containers, including tank cars and tank trucks, should be grounded and/or bonded when material is transferred.
Protection
Goggles or face shield. Eye protection is needed. Wear appropriate eye protection and protective clothing to prevent skin and eye contact.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses.
Stability
Volatile.
Incompatibilities
Incompatible with strong oxidizing agents like nitric acid.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
40
Autoignition, °C
288
Upper exp. limit, %
5.9
Lower exp. limit, %
1.1
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water may be ineffective.Fire Extinguishing Agents: Foam, carbon dioxide, or dry chemical
Fire potential
HIGHLY FLAMMABLE.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. Substance may be transported hot.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 100 ppm (400 mg/m3) OSHA PEL: TWA 100 ppm (400 mg/m3) IDLH 1000 ppm [10%LEL]
Poison_Class
-
Exposure effects
Mild central nervous system depression or excitation may occur after ingestion or vapor inhalation. CNS effects can occur secondary to hydrocarbon pneumonitis and hypoxia, or from additives and contaminants (aniline, heavy metals, camphor, or pesticides). Some hydrocarbons are simple asphyxiants (e.G., Methane, ethane, propane gasses) which can produce CNS effects secondary to hypoxia. In a prospective study in Toronto, major congenital malformations were noted in 13 of 125 fetuses of mothers exposed to organic solvents during pregnancy.
   Ingestion
Nausea, vomiting, diarrhea, and abdominal pain may occur following ingestion.
   Inhalation
Coughing, choking, tachypnea, dyspnea, cyanosis, rales, hemoptysis, pulmonary edema, pneumatoceles, lipoid pneumonia, or respiratory arrest may develop following ingestion and aspiration.
   Skin
May cause irritation or burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Pure petroleum distillates - gastric decontamination is not indicated in the majority of accidental ingestions, since systemic toxicity is unlikely from a pure petroleum distillate. Other hydrocarbons - gastric decontamination may be indicated if a large amount of a toxic hydrocarbon has been ingested (e.G., Suicide attempt) and if spontaneous vomiting has not occurred. Decontamination may also be indicated for ingestions of highly toxic hydrocarbons (e.G., Halogenated hydrocarbons, carbon tetrachloride) and for hydrocarbons which contain very toxic additives (e.G., Heavy metals, pesticides). The decision to decontaminate should be based on the toxicity of the agent, the volume ingested, time of ingestion and patient's clinical status. The potential for rapid cns depression, with seizures and/or respiratory depression, must be considered.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Wash skin with soap and water. Flush with running water for at least 20 minutes
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1256
Response guide
Hazard class
3.1
USCG CHRIS Code
PTN
 
33 Misc. hydrocarbon mixtures
Std. Transport #
4909278 4909279
 
IMO Chemical Code
I
IMO Pollution Category
I@