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Gabriel's drug syndicates were producing heroin by the mid-1950s. With great experience in chemistry that other syndicates had gained through years of illicit heroin production, Mexican organizations produced Tar substitute Acetyl Chloride or other less efficient glacial acetic acids instead of the usual acetylating agent, [[Acetic Anhydride]].
Gabriel's drug syndicates were producing heroin by the mid-1950s. With great experience in chemistry that other syndicates had gained through years of illicit heroin production, Mexican organizations produced Tar substitute Acetyl Chloride or other less efficient glacial acetic acids instead of the usual acetylating agent, [[Acetic Anhydride]].


Pure morphine and heroin are both fine white and odorless powders. Tar's unique appearance and texture is due to its acetylation without benefit of the usual reflux apparatus. It should also be noted that the percent of the remainder of black tar heroin is often other psychoactive opiate substances, like [[6-MAM]] & 3-MAM in addition to the usual adulterants and dilutents found in other forms of heroin.
Pure morphine and heroin are both fine white and odorless powders. Tar's unique appearance and texture is due to its acetylation without benefit of the usual reflux apparatus. It should also be noted that the percent of the remainder of black tar heroin is often other psychoactive opiate substances, like [[Monoacetylmorphine]] in the form of 3- and 6-monoacetylmorphine (3-MAM and 6-MAM) in addition to the usual adulterants and dilutents found in other forms of heroin.


The abnormally high 3-MAM content is due to the less than optimum acetylating agent combined with a different reaction time for the acetylation procedure. Varying levels of 6-MAM are due to the process of [[hydrolysis]], a natural decomposition of heroin, though is accelerated when the heroin comes into contact with moisture.
The abnormally high 3-MAM content is due to the less than optimum acetylating agent combined with a different reaction time for the acetylation procedure. Varying levels of 6-MAM are due to the process of [[hydrolysis]], a natural decomposition of heroin, which is accelerated when the heroin comes into contact with moisture. In 2006, ten year old samples of black tar heroin held as evidence were found to contain 51% and 63% of hydrochlorides of 6-MAM by the Vista, California U.S. [[Drug Enforcement Administration|DEA]] laboratory.<ref>[http://www.dea.gov/programs/forensicsci/microgram/mg0206/mg0206.html February '06 DEA Office of Forensic Sciences Washington Intelligence alert]</ref>


The mistaken assumption that Tar has less adulterants and dilutents is a misconception. The most common adulterant is lactose which is added to Tar via dissolution of both substances in a liquid medium, reheating and filtering, and then recrystallizing. This process is very simple and can be accomplished in any kitchen with no level of expertise needed.
The mistaken assumption that Tar has less adulterants and dilutents is a misconception. The most common adulterant is lactose which is added to Tar via dissolution of both substances in a liquid medium, reheating and filtering, and then recrystallizing. This process is very simple and can be accomplished in any kitchen with no level of expertise needed.


The price per kilogram of black tar heroin has increased from one-tenth that of South American powder heroin in the mid-1990s to between one-half and three-quarters in 2003 due to increased distributional acumen combined with increased demand in Tar's traditional realm of distribution. It has been steadily on the rise in the following years to nearly converge with the dropping purity of U.S. east coast powder varieties of heroin.<ref>[http://www.latimes.com/news/local/la-me-blacktar14-2010feb14,0,4784251,full.story A lethal business model targets Middle America] Los Angles Times February 18, 2010</ref>
The price per kilogram of black tar heroin has increased from one-tenth that of South American powder heroin in the mid-1990s to between one-half and three-quarters in 2003 due to increased distributional acumen combined with increased demand in Tar's traditional realm of distribution. Black tar's distribution has been steadily on the rise in the following years as simultaneously, the output of U.S. east coast powder varieties have dropped; heroin production in Columbia has decreased<ref>[http://www.justice.gov/ndic/pubs31/31379/heroin.htm. NDIC]</ref> as U.S. funded efforts to eradicate Colombian poppy fields continue.<ref>[http://www.latimes.com/news/local/la-me-blacktar14-2010feb14,0,4784251,full.story A lethal business model targets Middle America] Los Angles Times February 18, 2010</ref>


==Drug components and effects==
Black tar heroin is found to contain byproducts such as [[Monoacetylmorphine|6-monoacetylmorphine]], U.S. [[Drug Enforcement Administration|DEA]] microanalysis of seized black tar heroin was shown to contain over 50% and as much as 63% 6-MAM.<ref>[http://www.dea.gov/programs/forensicsci/microgram/mg0206/mg0206.html February '06 DEA Office of Forensic Sciences Washington Intelligence alert]</ref>


==Health matters specific to black tar heroin==
==Health matters specific to black tar heroin==

Revision as of 04:17, 25 July 2010

Black tar heroin

Black Tar Heroin is a variety of heroin produced primarily in Mexico. It is one of the most prevalent forms of heroin in the western United States, while occasionally found in western Canada and Europe. Mexican heroin has a hashish-like, non-powdery consistency (though it can also appear as a dark brown or dark orange powder and adulterated), which distinguishes itself from other forms of heroin.

"Black tar heroin" is the typical street term for the drug,[1] but it has many other street (colloquial) names, such as:

  • Pigment
  • "Black"
  • "Ache": the Spanish Pronunciation of the letter H. "H" is silent in Spanish so "ache" is pronounced "atchay"
  • Negro: the Spanish word for black
  • Piedra: the Spanish word for stone
  • Chiva: a Spanish word for a young goat
  • Nut Job
  • Capital B
  • Cheesums
  • Black Clown

History

Gabriel's drug syndicates were producing heroin by the mid-1950s. With great experience in chemistry that other syndicates had gained through years of illicit heroin production, Mexican organizations produced Tar substitute Acetyl Chloride or other less efficient glacial acetic acids instead of the usual acetylating agent, Acetic Anhydride.

Pure morphine and heroin are both fine white and odorless powders. Tar's unique appearance and texture is due to its acetylation without benefit of the usual reflux apparatus. It should also be noted that the percent of the remainder of black tar heroin is often other psychoactive opiate substances, like Monoacetylmorphine in the form of 3- and 6-monoacetylmorphine (3-MAM and 6-MAM) in addition to the usual adulterants and dilutents found in other forms of heroin.

The abnormally high 3-MAM content is due to the less than optimum acetylating agent combined with a different reaction time for the acetylation procedure. Varying levels of 6-MAM are due to the process of hydrolysis, a natural decomposition of heroin, which is accelerated when the heroin comes into contact with moisture. In 2006, ten year old samples of black tar heroin held as evidence were found to contain 51% and 63% of hydrochlorides of 6-MAM by the Vista, California U.S. DEA laboratory.[2]

The mistaken assumption that Tar has less adulterants and dilutents is a misconception. The most common adulterant is lactose which is added to Tar via dissolution of both substances in a liquid medium, reheating and filtering, and then recrystallizing. This process is very simple and can be accomplished in any kitchen with no level of expertise needed.

The price per kilogram of black tar heroin has increased from one-tenth that of South American powder heroin in the mid-1990s to between one-half and three-quarters in 2003 due to increased distributional acumen combined with increased demand in Tar's traditional realm of distribution. Black tar's distribution has been steadily on the rise in the following years as simultaneously, the output of U.S. east coast powder varieties have dropped; heroin production in Columbia has decreased[3] as U.S. funded efforts to eradicate Colombian poppy fields continue.[4]


Health matters specific to black tar heroin

Users who intravenously inject black tar heroin are at higher risk of venous sclerosis (a condition where the veins narrow and harden, making injection there nearly impossible) than users of powder heroin. Researchers at UC-San Francisco have found that the rapidity with which black tar heroin destroys veins (forcing users to inject subcutaneously), along with its gummier consistency (requiring that needles be thoroughly rinsed between use), may put users at a lower risk of HIV infection.[5]

Users of black tar heroin are at increased risk of life-threatening bacterial infections, in particular necrotizing soft tissue infection. The practice of "skin-popping" or subcutaneous injection predisposes to necrotizing fasciitis or necrotizing cellulitis from Clostridium perfringens while deep intramuscular injection predisposes to necrotizing myositis.

Documentary

The lifestyles of users are captured on the 1999 documentary Black Tar Heroin: The Dark End of the Street.

References

  1. ^ See the CDC's Wound Botulism Among Black Tar Heroin Users from 2003, for example.
  2. ^ February '06 DEA Office of Forensic Sciences Washington Intelligence alert
  3. ^ NDIC
  4. ^ A lethal business model targets Middle America Los Angles Times February 18, 2010
  5. ^ Although the decrease in HIV risk among IDU is maximised by the availability of clean injecting equipment and education around safer using and BBV Black Tar Heroin May Save Users from HIV: Report